A famous alternative culture epicenter and where Joplin serenaded young hippies.

This private residence was the template for one of the most beloved television homes of all time.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

A museum befitting the city responsible for supplying the majority of the world's LSD.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

A winding path built in secret on the edge of the continent.

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

A 140-year-old castle with underground caves hidden in San Francisco.

A psychedelic labyrinth on the San Francisco bay.

A huge musical instrument played by the ocean.