For nearly 50 years, this San Francisco nonprofit has been serving as a mix of recycling center and art school.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

The grand, column-fronted, sculpture-adorned home of the ambitious digital library.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

An essential stop before plundering, BYO Cutlass.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Tiki luxury on Nob Hill.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

A fake town founded by Western movie stars is now becoming a hip desert community.

A music-filled, booze-soaked oasis in the desert.

Located close to a movie studio lot, this restaurant has a long history of star-studded patronage.

A treasure hunter's tiny bar, harboring celebrities since 1959.

The beloved dining spot stands at the cross-section of Hollywood and the Old West.

International delicatessen has been owned and operated by the same family for more than 110 years.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Four cars from the old system were once on display, but were removed in 2014.

A Red Hook dive bar that is holding onto its roots.

For almost a century, this East Village newsstand has served egg creams to beats, hippies, punks, and everything in between.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

One of the largest public housing complexes in New York once visited by Eleanor Roosevelt.