California's most comprehensive horticultural library.

In this century-old literary safehouse, print is alive and well.

Half of a house.

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

Floating man-made island and upscale restaurant.

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

A hidden subterranean installation offers a view of the sky.

The tea room that pushed the boundaries of adorable straight into...we can't find the words.

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.

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

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

A huge musical instrument played by the ocean.

Law-protected wreckage serves as a peculiar memorial for an almost forgotten World War II tragedy.

One man's love of natural beauty led to the creation of this hidden granite monument.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.