A hidden world of exotic succulents and cacti.

Life in this isolated, hilltop lighthouse was lonely, but it sure was lovely.

This 252 step staircase offers stunning views of San Jose.

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.

An extensive collection of ancient Egyptian artifacts and mummies.

Join the circus for a few lessons to learn clowning, acrobatics, and Chinese contortion.

A huge musical instrument played by the ocean.

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

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

This shop specializes in oddities and Victorian-inspired wonders.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

A psychedelic labyrinth on the San Francisco bay.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

A terrific purveyor of natural history objects and curios.