Unearthing the Mushroom House: A relic of architecture and adventure | Bartell's Backroads
Unearthing the Mushroom House: A relic of architecture and adventure | Bartell's Backroads
Just north of San Diego, nestled against the base of a seaside cliff, lies a strange and futuristic-looking structure. Known as the Mushroom House, this iconic relic of architectural ambition has intrigued hikers, beachgoers and urban explorers for decades.
Despite its sci-fi appearance, the Mushroom House is not a flying saucer, but the remains of an extravagant beach house. To find it, adventurers must first descend the steep Black's Beach Trail, a half-mile journey downhill. Once on the sand, a three-quarter mile trek along avalanche-prone cliffs leads directly to the house — a journey as rugged as it is scenic.
While not exactly hidden, the Mushroom House still holds an air of mystery. On any given day, you might find people lounging or tossing a football in front of the graffiti-covered structure. The gate that once secured the property now does little to keep the curious away.
The history of the Mushroom House is less well known. To uncover its origins, La Jolla historian Carol Olten shared insights into its unusual backstory.
“It was commissioned by Sam Bell, who was a wealthy individual,” Olten explained.
Bell, an heir to the General Mills fortune, made a name for himself by creating Bell Brand potato chips. After building a cliffside residence over Black's Beach in the 1950s, he decided to add a second, more adventurous beachfront home below.
In 1968, Bell commissioned architect Dale Naegle to design a bold new bungalow.
“The Mushroom House was designed during the heyday of the space age,” Olten said, explaining how the design was heavily influenced by the era’s fascination with futuristic forms.
Constructed from concrete and perched on a precarious cliffside, the house required a custom-built tram to shuttle visitors down from the main house above. Building on the sandstone cliffs was risky.
“The cliffs are not very stable,” Olten noted. “Chunks of them fall off.”
As if cliffside construction wasn't enough of a headache, the area below was simultaneously gaining attention for another reason.
“Black's Beach became, I think, the very first nude beach in California,” Olten said.
When completed, the Mushroom House offered breathtaking views of the Pacific that Bell enjoyed for many years before eventually selling the property to a local philanthropist.
The new owners, who prefer to keep a low profile, have had their share of challenges. In 2020, a section of the bluff collapsed, damaging the tramway and raising concerns about the structure’s future.
For now, the Mushroom House stands as a monument to bold design, beachside history and a uniquely Californian spirit of eccentricity.
MORE EYE-CATCHING ARCHITECTURE ON THE BACKROADS: Discover the Fallen Star, a house precariously perched atop UC San Diego's engineering building.
