Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

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

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

Megachurch turned Catholic church comprised of 10,000 glass panes.

The ghostly remains of an accidental sea.

Oldest building in California still in use.

San Diego's most historic and haunted home.

A large sculptural artwork and garden in Escondido, California.

A world-class observatory in the California desert.