Our Guide to the 15 Best Abandoned Places in California 2023

Since the Gold Rush days of the mid-19th century, California has been a destination for those hoping to realize the American Dream and the opportunity and prosperity it promises. While many of its residents do manage to achieve the wealth and success they seek, just as many see their dreams crumble—due to personal shortcomings, natural disaster or economic headwinds.

As a result, the Golden State is a motherlode of interesting abandoned places, including derelict infrastructure, shuttered businesses and deserted residences. To help you narrow your list of locations to visit on your next trip, we’ve compiled the following guide to the 15 best abandoned places in California.

Killer Urbex Note: It is important to note that many of these locations are in an extremely delicate state. Specifics on the locations are not given purposefully to ensure the abandoned places in California stay as vandalism and destruction-free as possible. Take only photos, leave only footprints.

If you have a specific location from the list below that you would like to immediately get more information about, click the links in the list to snap straight to that abandoned places in California location.

It is important when considering abandoned places in California to know the basics of California trespassing laws. Luckily, we have developed a massive guide to trespassing laws in all 50 states. For laws that specifically relate to California, please click here.

The Best Abandoned Places in California

Note: If you’re looking for lists from specific cities in California, we urge you to check out the following two guides:

Rock-A-Hoola Waterpark (Newberry Springs)

Abandoned places in California image by Logan Bush | Shutterstock

This now-defunct waterpark in the heart of the Mojave Desert began in the early 1960s as a private escape for wealthy businessman Bob Byers and his family and friends. The original construction consisted simply of two large steel slides that carried riders into a 273-acre man-made lake named for Byers’ wife Dolores. In May 1962, a public campground next to the lake opened, and eventually the waterpark opened to the public as well.

Over the next several decades, Byers added new attractions to the property, including eight 150-foot slides mounted at a 60-degree angle, sending float-riding passengers bouncing across the lake; two V-shaped slides that sent vertically-oriented riders shooting into the water; three high dives, three trapeze-style swings and a zipline into the lake; a group raft ride; a JetSki racetrack; a traditional swimming pool; and a “lazy river.” The park peaked in popularity in the late 1970s and mid-1980s, but declining attendance forced its closure and sale in 1990.

Abandoned places in California image by Logan Bush | Shutterstock

The group that bought the property planned to reopen it with a retro 1950s theme, and renovations continued through 1998, when the park reopened under the Rock-A-Hoola name. After just three seasons of operation, the park was millions in debt, its financial condition exacerbated by a successful lawsuit filed by an employee who was paralyzed after riding a slide into a partially-filled pool. The employee was awarded $4.4 million in damages, and the park filed for bankruptcy in 2000 and closed for good in 2004.

In the years since, the harsh desert sun has cracked and faded the brightly-colored slides and attractions, and scavengers and vandals have looted the abandoned park of anything of value, leaving the remaining dusty, graffiti-covered structures to resemble a sad mirage in the midst of the Mojave. It should come as no surprise that the Rock-a-Hoola Water Park made it onto our list of abandoned places in California.

Casa Sirena Seaside Resort (Oxnard)

Abandoned places in California image by HenroKappa via Reddit | AbandonedPorn

This posh Southern California resort was built in Channel Islands Harbor in 1972. Part of the portfolio of regional hospitality kingpin Martin Smith, the property featured nearly 300 lavish rooms, an ornate lobby, pool, hot tub and other amenities to appeal to seasonal visitors. The resort was an instant success, spurring Smith to construct a 90-room annex just four years after the original facility opened.

After three decades in operation, the main hotel underwent major renovations in 2006, and the annex was transformed into a Hampton Inn. Despite the facelift, the hotel ceased operating in 2009, although the Hampton Inn next door remained open for business.

Abandoned places in California image by David Finn via Ventura County Citizens Journal

After Casa Sirena closed its doors, its interior spaces were essentially abandoned, with furniture and fixtures left to the mercy of vandals and nature. Many of its glass doors and windows have been shattered, allowing mold, weeds and other plants to invade the guest rooms and common areas. Walls and furniture have been tagged with crude graffiti, and several concrete mermaid statues have been tossed like toys around the property.

Though it was once a highly sought-after destination for Los Angeles-area tourists, today the only visitors to Casa Sirena are pedestrians who use the sprawling property for exercising or walking their dogs.

Old Los Angeles Zoo (Los Angeles)

Abandoned places in California image by Petrinad | Shutterstock

From its humble beginnings in 1912 as the location of a former ostrich farm, the Griffith Park Zoo never really found its footing as a legitimate zoological park. It initially opened with just 15 animals in its care, and with insufficient funding for proper enclosures, the park simply put up stockades meant to prevent the animals from escaping and hoped for the best. During World War I, meat shortages forced caretakers to resort to feeding the animals horse meat, which resulted in the deaths of multiple large cats as well as members of other species.

During the 1920s, the closure of the nearby Selig Zoo—owned by film producer William Selig and used primarily as a source of non-human talent for movies—swelled the population of the Griffith Park Zoo, which took in many of the creatures housed at Selig’s facility.

Over its half-century in operation, the zoo housed a variety of interesting and infamous residents, including Old Topsy, a camel who retired from the Ringling Brothers Circus after both of his humps were flattened during a train accident; an irascible polar bear named Ivan the Terrible who ultimately killed three of the zoo’s other polar bears, including his mate; and the pet elephant who occasionally boarded at the zoo when his vaudeville actor owner went out of town.

Abandoned places in California image by DBrower | Shutterstock

Though the city-supported zoo was relatively popular with guests due to its free admission, the facility was widely criticized for providing questionable levels of care to its inhabitants. In 1958, Los Angeles voters approved an $8 million bond measure to fund a new zoo, and Griffith Park’s animals were relocated to the recently completed Los Angeles Zoo in 1966.

Most of the structures at the former Griffith Park Zoo were left in place, including animal cages, caves and habitats, although some had their bars removed. Benches and picnic tables were added to the site, and it became a quirky recreation destination that remains popular with locals and tourists alike; it also served as a filming location for the 2004 film Anchorman, starring comedian Will Farrell.

To investigate the old zoo for yourself, take I-5 to Crystal Springs Drive and Griffith Park Drive, where parking is available in the Spring Canyon area. Several aging caves and other enclosures are easy to spot from the parking area, and you can stroll the paved path through the park to access additional cages and remnants of the facility.

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Chemung Mine (Masonic)

Abandoned places in California image by Audrey Snider-Bell | Shutterstock

At the turn of the 20th century, a transplant from the state of Illinois named Stephen Kavanaugh tapped into a gold vein near the California-Nevada border. The mine, which opened in 1909, was named the Chemung Mine after Kavanaugh’s hometown, although he never received a cut of the profits. Over the next decade, the thriving town of Masonic grew up around the mine, with its own general store, mill, bunkhouse and other businesses.

The mine continued to produce rich yields of gold and silver for the next 30 years, outlasting many of the other mines in the area. In 1938, the last handful of miners exited the shaft, and Chemung Mine was sealed off permanently. Most of the town’s inhabitants, nearly all of whom were associated with the mining operation, eventually left for better opportunities.

Abandoned places in California image by Karen Foley Photography | Shutterstock

In the 1950s, a prospector named Elton Heinemeyer attempted to revive the mine, probing the long-vacant tunnels for additional ore, but his efforts were generally fruitless, and he abandoned Chemung Mine again in the 1960s.

Today, the abandoned mine and the ghost town of Masonic stand frozen in time, their weathered collapsing after decades of neglect and the effects of the harsh desert climate. Many of the original wooden buildings are pockmarked with bullet holes where they have been used for target practice.

Rockhaven Sanitarium (Glendale)

Abandoned places in California image by Jason House via Chicago Tribune

Due to its temperate climate and calming scenery, California was a popular location for sanitariums in the late 19th and early 20th century (and indeed, remains the home of hundreds of mental health treatment centers, the modern version of the sanitarium). Many of these pioneering facilities have been abandoned over the decades, perhaps most notably the Rockhaven Sanitarium just north of Los Angeles.

Founded in 1923 by a psychiatric nurse, Rockhaven Sanitarium has the distinction of being the first mental health facility in the U.S. established by a woman. Agnes Richards had spent her prior career working in state-operated asylums and sought to create a more humane alternative for treating mental illness. Rockhaven opened with a single residence and soon expanded to occupy a three-acre campus, attracting wealthy and well-known clients like actress Billie Burke, who played Glinda the Good Witch in The Wizard of Oz, and Marilyn Monroe’s mother.

Abandoned places in California image by Raul Roa | Glendale News-Press

A private hospital group purchased the Rockhaven facility in 2001, shuttering it just five years later due to underperforming profit margins. When it closed its doors in 2006, it was the last of the original sanitariums, providing compassionate care to patients for more than 80 years. Fortunately, the City of Glendale saved the treatment center from demolition, and it remains in relatively good condition thanks to the efforts of a nonprofit organization that offers tours of the site and assists with maintenance.

Visitors can still reap the healing benefits of strolling past the old residential cottages and through its calming gardens, which are accentuated with charming fountains, stone pathways and arches. It should come as no surprise that the Rockhaven Sanitarium made it onto our list of abandoned places in California.

Underground Tunnels (Los Angeles)

Abandoned places in California image by fr0gnutz via Reddit | AbandonedPorn

When the 18th amendment halted the sale of alcohol throughout the country in 1919, the citizens of Los Angeles weren’t fazed—they simply got creative. Using 11 miles of underground service tunnels, the city maintained a thriving network of speakeasies and supply chains that took its cues directly from the Mayor’s office. While the rest of the country was forced to go dry, underneath Downtown Los Angeles the party never stopped.

Behind seemingly-innocent storefronts, venues like King Eddy Saloon were able to maintain a law-abiding appearance and continue to prosper, remaining in business at the corner of 5th and Main streets a century after Prohibition was repealed. If you take the stairs to the basement, you can still see the remains of the old network of tunnels, marked with vandals’ graffiti and chunks of crumbling brick.

Abandoned places in California image by David Ian McKendry | The 13th Floor

Though many of the tunnels have been blocked off by the city for safety reasons, a few remain accessible to the public and see a variety of uses, including as film sets and as a weatherproof pedestrian walkway for city employees and joggers.

To visit the tunnels that are still open, take the elevator in the alley behind the Hall of Records on Temple Street. Iron gates limit access to areas considered at risk of collapse in case of an earthquake, but you’ll still have plenty of gloomy, graffiti-festooned passageways to explore.

Bayshore Roundhouse (Brisbane)

Abandoned places in California image by Jules Fairley | Shutterstock

As the only brick roundhouse still standing in the state of California, the Bayshore Roundhouse is a rare piece of railroad history. These structures numbered in the hundreds during the height of the Railroad Age, providing a space for maintaining and repairing steam engines, which could then be moved in and out via the massive rotating turntable just outside the roundhouse.

Completed in 1910 by the Southern Pacific Railroad, the Bayshore Roundhouse featured 17 covered stalls and 23 outdoor stalls on “whisker” tracks, named for their resemblance to the feline facial feature. A 90-foot turntable completed the facility, which serviced steam engines for freight trains in the region, while passenger train engines were handled by the railroad’s Mission Bay Roundhouse.

Abandoned places in California image by Paul Chinn | San Francisco Chronicle

Business at Bayshore remained steady until the mid-20th century, expanding to 25 outbound and 39 inbound tracks along with a freight yard, storage buildings and even a medical center to serve the site’s 3,000 employees. However, as steam engines were replaced by lower-maintenance diesel engines—which could also be operated in forward and reverse and therefore didn’t require a turntable—roundhouses started to become a relic of the past.

After a quarter-century of dramatically reduced operations servicing diesel engines, the Bayshore Roundhouse finally closed down in 1982. The rail lines were removed and many of the buildings torn down, but the brick roundhouse itself remained standing when the property was sold in 1989. However, a 2001 fire demolished a sizable chunk of the structure, and weather, vandals and street artists have further defaced it in the years since, leaving it a dilapidated skeleton of its former self.

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Año Nuevo Island (Pescadero)

Abandoned places in California image by David A. Litman | Shutterstock

Though difficult for the general public to access, Año Nuevo Island is one of the most fascinating locales along the northern California coast. Previously linked to the mainland by a thin strip of land, Año Nuevo became a true island after rising sea levels established a permanent channel between them. At that point, the handful of human inhabitants abandoned it, leaving behind a few aging residences and a lighthouse, which was demolished in the early 21st century due to its precarious structural state.

Once humans left the island, it was overtaken by a thriving wildlife population, including elephant seals and sea lions. The island has become one of the world’s primary breeding grounds for the elephant seals, who have reproduced so prolifically there that the species has managed to claw its way back from the edge of extinction.

Abandoned places in California image by Radoslaw Lecwyk | Shutterstock

Today, the 4,000-acre island is maintained by the University of California Natural Reserve System in partnership with the California Department of Parks and Recreation. A few of the existing buildings have been repurposed as research facilities, but the island’s rocky shores and coastal landscape are dominated by the wide variety of marine life that makes its home here. It should come as no surprise that Año Nuevo Island made it onto our list of abandoned places in California.

Sutro Baths (San Francisco)

Abandoned places in California image by Tyna Chenoweth | Shutterstock

Established by former San Francisco Mayor and wealthy engineer Adolf Sutro, the Sutro Baths were just one example of Sutro’s lifelong ambition to offer affordable, family-friendly recreation to the residents of the area.

Born in Germany in 1830, Sutro arrived in the U.S at age 20 with an engineering degree, which he used to redesign the tunnels of Nevada’s Comstock silver mines to prevent the devastating floods that took the life of one miner for every ounce of silver yielded by the mine. The engineering feat not only dramatically improved mine safety, but also facilitated the production of vastly greater stores of silver, making him a millionaire in short order.

Nearing the end of the 19th century, Sutro began amassing land along the northern Pacific coast; he filled the 22 acres with lush gardens open to the public and built his iconic Victorian mansion Cliff House near the site of his future “aquarium.” What started as a small man-made tide pool adjacent to the residence eventually grew into plans for a vast collection of public baths.

Abandoned places in California image by Erik W. Grow | Shutterstock

The $1 million development included six seawater pools covered by massive glass arches, with a raised promenade used to display the global artifacts Sutro acquired on his travels, including taxidermy, rare plants and even Egyptian mummies. Several hundred dressing rooms and a 3,700-seat amphitheater rounded out the lavish facility. An ice rink was added in the 1930s.

The baths were at first wildly popular, but over time the cost to maintain the massive facility began to overtake the revenue it generated, and the pools closed in the mid-1950s. The campus was slated for demolition in 1966, but a suspicious fire destroyed most of the structure before it could occur. Though the main building no longer stands, the outlines of several of the pools are still easy to make out, and the deep diving pool is instantly identifiable with its ladder supports and flashes of blue paint.

The property is now under the purview of the National Park Service and is easily accessible via established paths and a cave tunnel that runs through the mountain. The artifacts collected by Sutro are now on display in the collections at San Francisco State University.

16th Street Station (Oakland)

Abandoned places in California image by ktao | Shutterstock

Of three grand train stations built at the height of the Bay Area’s Rail Age, the crumbling 16th Street Station in Oakland is the only one still standing.

The 16th Street Station was completed in 1912 and shared by the Southern Pacific Railroad (which owned the ground-level tracks) and the East Bay Electric Lines, which operated the Interurban Electric Railway (IER) on the elevated track. The sweeping Beaux Arts-inspired design was a crown jewel in the city’s beautification campaign, which incentivized the construction of aesthetically distinctive buildings in the downtown area.

Abandoned places in California image by ktao | Shutterstock

As the rail industry began a nationwide decline in the mid-20th century, traffic at the 16th Street Station dropped significantly, and the 1989 Loma Prieta earthquake caused significant structural damage to the building, resulting in its abandonment.

The station stood empty and deteriorating for two decades until it was renovated and reopened as a private event space in 2019. Fortunately, the developers opted to preserve much of the graffiti and industrial elements that came to define the building in its vacancy, resulting in a unique and distinctive destination for weddings, parties and other gatherings.

Donner Pass Summit Tunnel (Truckee)

Abandoned places in California image by Serj Malomuzh | Shutterstock

Armed with a vision to establish a railroad through the Sierra Nevada range, civil engineer Theodore Judah began surveying the region and securing the funds to make his Gold Rush-era dream a reality.

Unfortunately, as crews consisting largely of Chinese immigrants labored to build the tunnels through the rocky landscape, Judah contracted yellow fever and died before the project could be completed. Indeed, it took more than five years of excruciating effort, including the use of hand drilling and dangerous explosives, to carve out the route linking Omaha, Nebraska to Oakland, California. The first train completed the trip in 1868.

Abandoned places in California image by filip lemic | Shutterstock

Judah’s legacy lived on for more than a century afterward, with the tunnels used by railroads until 1993, when a new route was constructed through the region, passing through Mount Judah, named in tribute to the ambitious engineer. The abandoned tunnels remain in place and are named for the Donner Party, the infamous group of explorers that unsuccessfully attempted to navigate the region during a severe blizzard and ultimately resorted to cannibalism for survival.

The property is owned by the Union Pacific Railroad, and although “No Trespassing” signs are posted near the tunnel, enforcement is spotty, making the tunnels and several adjacent snow sheds a popular destination for hikers and urban explorers. It should come as no surprise that the Donner Pass Summit Tunnel made it onto our list of abandoned places in California.

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Elsinore Naval and Military School (Lake Elsinore)

Abandoned places in California image by Hidden California

This former military academy began its existence as the Southern California Athletic and Country Club, designed to appeal to the area’s wealthiest and most well-known residents. Though construction was completed in 1924, the club never opened its doors to members due to complications with the original owners and the looming financial crisis.

The 200-acre property included lakeside cottages, tennis courts, a golf course and a marina. The clubhouse featured a grand lobby, ballroom, reception room, dining room and multiple billiard rooms on the ground level, while the second floor held guest rooms and suites. An L-shaped pier and 500-car garage were also planned for the campus.

After several years spent languishing on the market, Col. Glenn Conklin of the Pacific Military Academy in Culver City acquired the property. With assistance from a banker friend, Conklin was able to realize his lifelong dream of owning and operating his own military academy. In 1933, Elsinore Naval Academy was incorporated to serve male students in grades 1 through 12.

Abandoned places in California image by Hidden California

The school’s enrollment peaked at several hundred students in the early 1940s, and for a time it even operated its own dairy farm. Much like the country club it was originally intended to become, Elsinore Naval Academy attracted students from the wealthy and well-connected, including sons of diplomats, foreign dictators and even Hollywood celebrities like Bela Lugosi, Brian Keiths and Barbara Rush.

Conklin sold the lake and much of the campus’ acreage to the Lake Elsinore Park Board in 1955, and the academy slowly declined over the next two decades, culminating with a massive fire in the school’s lobby in the 1970s. It closed its doors for good soon afterward, with 1977 marking its final graduating class.

Since then, the property has remained vacant, with only the main building surviving a fire that gutted the classroom outbuildings in the 1980s. A chain-link fence surrounding the school has done little to deter the vandals and vagrants that have damaged the building over the decades, although a caretaker does live on-site to keep tabs on the property. The derelict campus was listed for sale at a whopping $10 million in 2020, but the listing has since been removed, leaving its future up in the air.

Kaiser Quarry Ruins (Oakland)

Abandoned places in California image by Northern California Dog Trails

Among Bay-area residents, Sibley Volcanic Regional Preserve is popular for its dozens of miles of hiking and equestrian trails, verdant green peaks formed by ancient volcanoes and Mazzariello’s Maze, a winding labyrinth at the summit of the Round Top Trail. However, the site’s history as a sand and gravel quarry is equally fascinating.

During the 1930s, the land was home to the Kaiser Sand and Gravel quarry. Material from the quarry was used for the construction of the Caldecott Tunnel, which established an essential east-west connection between Oakland and Orinda by way of the Berkeley Hills.

In 1936, when construction on the tunnel was winding down, the quarry shut down and the property was converted into one of a trio of East Bay Regional Parks. It was known as Round Top Park until 1972, when it was rededicated as Sibley Regional Volcanic Preserve in recognition of Robert Sibley, a local parks champion.

Abandoned places in California image by Northern California Dog Trails

The road leading to the quarry has since been transformed into the 3.5-mile Skyline Trail, although chunks of concrete from the original roadway are still visible along its length. If you can tear your gaze away from the dramatic vistas and colorful wildflowers that mark the trail, you’ll see the skeletal remains of a 1971 Opel sedan rusting in the brush along the path.

A decrepit wooden shack, with little more than its frame still standing, is located further down the trail. The surrounding area is scattered with random industrial detritus, such as pipes, barrels, ceramic and glass shards, tin roofing material and other junk.

Mansion Belle/Spirit of Sacramento (Sacramento)

Abandoned places in California image by Jo Murray | Long Beach Grunion Gazette

This historic boat began its journey in 1942 as the Putah, a snag boat operating under the banner of the U.S. Army Corps of Engineers. The steel vessel spent the next eight years buzzing up and down the Sacramento River, clearing obstructions along the river bottom to create a safe path for other boats.

In 1950, the boat’s next chapter began when famed actor John Wayne purchased the Putah for use in the 1955 film Blood Alley, starring Lauren Bacall alongside Wayne himself. After production on the movie wrapped, Wayne sold the boat to local businessman Frank Parisi, who christened it the Mansion Belle and used it to host river cruises for the next decade.

The Mansion Belle changed hands again in 1991, with its new owner rebranding it as the Spirit of Sacramento. It remained in service as a dinner cruise ship until it was gutted by a massive blaze five years later. Following the fire, Santa Rosa Captain William Barker purchased the ship for $120,000 with plans to rebuild its three decks and restore it for future river cruise business.

Abandoned places in California image by twosweaters via Reddit | Sacramento

However, Barker’s rehabilitation efforts were stymied by permitting challenges, vandalism and other issues. Vandals and scavengers stole wiring, broke windows and caused additional damage to the ill-fated ship, and at one point, it began to sink into the river.

The State of California eventually sued Barker to force him to move the boat, citing its precarious location upstream from other privately owned vessels. Barker ultimately complied and relocated it to the Rio Ramaza Marina, where it languished for several years. At some point—how and when is unclear—the dilapidated shell of the Spirit of Sacramento ended up marooned alongside the Garden Highway, where it seems likely to remain indefinitely.

Devil’s Slide Bunker (Pacifica)

Abandoned places in California image by David Prosser | Shutterstock

Located just off the scenic Pacific Coast Highway, Devil’s Slide is a steep, rocky bluff overlooking the vast waters of the Pacific Ocean. During World War II, the U.S. Army identified it as an ideal location for one of five fire control stations built as part of the Little Devils Slide Military Reservation that would bolster the defense of San Francisco in case of enemy attack.

The installation featured three steel and concrete observation pill-boxes, two concrete and earth bunkers and a steel observation tower. Soldiers manning the station would scan the horizon for Japanese ships, ready to call in their location to the gun batteries at Fort Funston and Marin Headlands.

Abandoned places in California image by Droneandy | Shutterstock

After the war ended, advances in radar technology soon rendered the station obsolete. It was abandoned in 1949 and remained vacant for the next 34 years. A private owner bought the site in 1983, demolishing all of the existing structures except for one concrete bunker.

The majority of the bluff surrounding it was removed as part of planned construction, but the project was never completed, and the sand-colored concrete bunker is now perched atop a 15-foot rock and festooned with brightly-hued graffiti. The property is still privately owned, but despite the fence put up to deter visitors and vandals, new graffiti still appears periodically on the lonely bunker.

Our Final Thoughts on Abandoned Places in California

Those who are into urban exploration in the California area, and wanting to explore abandoned places in California, should get comfortable with California trespassing laws. Luckily, in the state of California, the laws are easy to understand and are pretty cut and dry.

For more about obtaining permission to explore abandoned places in California, check out our guide Explore Abandoned Buildings: How To Get Permission.

Additional Urban Exploration Resources