A psychedelic labyrinth on the San Francisco bay.

An alley covered with 20 years of bubble gum.

This giant shopping mall still holds signs of its automotive past.

Sporting Brutalist architecture, this school is hidden amid a quiet suburban neighborhood.

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

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.

At night, this glittering musical tunnel draws skaters and photographers.

It is locally loved and ridiculed for literally looking like poop.

A statue commemorate Tommie Smith and John Carlos's brave protest at the 1968 Olympics, a watershed moment for civil rights.

For roadside fast food, pull over at the giant orange.