Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

If you are looking for a used Russian battery, Chinese Ham Radio or other electronic oddities this Flea Market is a good place to start.

Location of the most powerful laser in the world, and the potential birthplace of tiny stars.

The largest drain hole in the world.

Bonsai garden in Oakland is curated by the first non-Japanese female bonsai master in the United States.

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

Gigantic unfinished stupa and the world's 2nd largest bell.

An artsy hidden staircase leads to breathtaking views of San Francisco.

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

A huge musical instrument played by the ocean.

Floating man-made island and upscale restaurant.

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

The restored and active Victorian-era final resting place of San Francisco.

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

Early prototype for Frank Lloyd Wright's Guggenheim.

The only theatre in the world constructed specifically for sound movement.