Graffiti-covered ruins that were once part of a farm owned by a mental hospital.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

This fully intact Neoclassical-Greek Revival style firehouse operated until 1938.

A man-made island in scenic San Francisco Bay.

Before it was abandoned and left to rust alongside the road, this riverboat starred in a John Wayne movie.

This opulent hotel has been visited by Spider-Man, Charlie's Angels, and the Ghostbusters.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

A living time capsule of the 1960s Richardson Bay water-front.

Eclectic collection of dark and macabre antiques.

An eccentric home stands out in an otherwise average neighborhood with mosaics, mini topiaries, and kinetic sculpture.

A historic hotel that made a cameo in Hitchcock's classic film has no intention of letting guests forget its fame.

Only hotel where you can legally launder money.

San Francisco's newly reopened hands-on science museum.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A pier that used to act as a busy ferry dock is now a decaying favorite of local fisherman and urban artists.

A playground built by the kids that is a child's wonderland, and a helicopter parent's nightmare.

A private home built to resemble the shape of a microscopic creature.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

A ruined hotel with an unlucky history and an eerie present.

The beauty and the beast of hydraulic mining is on full display at this California Historic State Park.

Established in 1853, this crumbling cemetery sits forgotten on the corner of Church and Chapel in Gold Country.

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

Dentist's hated concrete colossi are now beloved icons of the community.

This former boomtown "island" is now submerged below Folsom Lake.