An alley covered with 20 years of bubble gum.

A house built from trash known as the poor man's Hearst Castle.

It's not your typical library, memorial, or book store.

One of the oldest reform schools in the United States, home to wayward boys such as Merle Haggard, now abandoned.

One poet's handmade, anachronistic home.

This municipal playground was co-created by the father of one of the most playful characters ever.

Subterranean house made out of a grain silo, located in the Santa Cruz Mountains.

340 bicycles, 65 feet high.

Nursery with extensive collection of flesh-eating plants operated by the author of "The Savage Garden."

The haunting ruins of Jack London's dream house.

Nuclear waste dump site now an environmental sanctuary.

A Roman-inspired temple once controlled half of San Francisco's waters.

An archive of nearly every day of Buckminster Fuller's life.

Guarded by the Angel of Grief, the Stanford family tomb attracts an odd mix of halloween revelry and somber contemplation.

The rusting remains of the largest assembled WWII fleet on the West Coast.

A comprehensive collection of Pez dispensers.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.

Playable, historic pinball machines fill this Alameda museum.

Collective dedicated to restoring steam engines.

A crumbling Beaux Arts monument to the Bay Area's age of rail.

This sailor's boneyard was lost under a parking lot for decades before being rediscovered.

A Barbary Coast watering hole built into a Gold Rush shipwreck.

This shop specializes in oddities and Victorian-inspired wonders.

Half of a house.