The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

Golden Gate Park's historic collection of plants.

This traditional garden in the San Fernando Valley doubled for Star Fleet Academy, and is irrigated entirely by wastewater.

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

This 19th-century church is now a popular roller rink.

The remains of a ruined mansion memorialize the 1906 earthquake.

The largest permanent Monopoly board makes one of the longest games even bigger.

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

This ultra-modern home clings to the slope of the Hollywood Hills on a precarious stilt.

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

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

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

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

Most famous work of one of Frank Lloyd Wright's sons.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

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

Canyon walls shrouded in ferns.