A rough granite monument marks the spot where Europeans first caught sight of the San Francisco Bay.

The largest permanent Monopoly board makes one of the longest games even bigger.

A huge musical instrument played by the ocean.

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

Gold Rush-era tombstones line the park's paths.

A collection of memorabilia from the Beat era in the back of a San Francisco bookstore.

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

Furniture tries to escape an abandoned building in San Francisco.

A rococo retro-futurist future-rustic vernacular between yesterday’s tomorrow and the future that never was.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

A comprehensive collection of Pez dispensers.

Travelers exchange letters with woodland creatures at this mini post office.

A creepy steel gremlin has protected the Bay Bridge since 1989.

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.

An abandoned car and strange wooden debris are among the scattered remains of the old sand and gravel quarry.