Olfactory delights in San Francisco's Botanical Gardens.

A huge musical instrument played by the ocean.

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

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

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

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

Handcrafted thermal spa washes away each night with the tide.

'Cause the fence start shaking, the earth was quaking.

Virgil's many-mouthed gateway to the underworld.

This naturally-sourced hot spring is now home to a clothing-optional resort.