1,056 Cool, Hidden, and Unusual Things to Do in California

A huge musical instrument played by the ocean.

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

A peculiar mansion built by the troubled heir to the Winchester gun fortune.

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

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.