Abandoned hotel with adjacent lake and golf course.

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

The location of the last stand of Charles Manson's doomsday cult.

"Only the devil could play golf here."

Ten 25-foot-tall, beehive-shaped kilns, abandoned in Death Valley.

An expansive and intricately restored mansion remains from over a century ago--and so do its ghosts.

A popular tourist cave with a dark past.

This impressive tunnel was dug entirely by hand over the course of 36 years.

An abandoned Jazz Age dream home and con man's hideout in Death Valley.

Smooth basaltic rocks tell a tale of ancient glacial waterfalls.

The rocks in this arid basin leave trails of movement behind them.

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

A glimpse into the lives of the the Miwok and Paiute people in Yosemite National Park.

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

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

Towering basalt columns, a creation of fire and ice.

A charming desert roadside bakery that produces 10 times more bread daily than it has residents in its town.

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

These millipedes glow not out of attraction, but as a not-too-subtle warning.

The world's brightest bioluminescent bay.

This small primate research island is teeming with playing, fighting wild monkeys.

This limestone cave offers an incredible view of the Río Grande de Arecibo valley.

A humid oasis combines recreation with exploration in a unique underwater cavern.

A giant 400-acre preserve in North Florida for displaced wolves.