The ghostly remains of an accidental sea.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A huge musical instrument played by the ocean.

Golden Gate Park's historic collection of plants.

The private clubhouse for the members of the Academy of Magical Arts.

A 1920s speakeasy that had rum runners racing up and down the shores of California.

An enormous artwork that colorfully celebrates over 150 years of US military achievements.

A man-made island in scenic San Francisco Bay.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

Haunting and beautiful trees, doomed to die.

Thousands of turbines whir at at the origin of North American wind power.

A hotel and restaurant serving as the mecca of kitsch.

An alley covered with 20 years of bubble gum.

A house built from trash known as the poor man's Hearst Castle.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

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

Coastal dunes, site of buried Egyptian movie set and former utopian colony.

A museum dedicated to a sea that should have never been.

Version of the French Riviera destroyed by the sea.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.