An ancient city hidden in the heart of the Sierra Nevada mountains.

"X" marks the spot of an echo chamber in the middle of a plaza.

Hidden amid the old-world charm of Savannah is a museum dedicated to the world of oddities and criminal history.

This bar hosts an ever-evolving napkin art installation devoted to an American president.

This quirky curiosity shop takes its cues from the world's bazaars.

Performers, intricate sets, and a real speakeasy tell the story of the 18th Amendment.

This rock formation named for its unique shape is one of many that call the Alabama Hills home.

A natural dome made of volcanic glass in Inyo National Forest.

California's own majestic geyser is powered by a subterranean volcano.

The rusting remains of the largest assembled WWII fleet on the West Coast.

The capitol city's oldest existing cemetery.

Its dark depths conceal millions of rare, delicate crystal formations.

This 18-foot-tall steel lotus is a meditation on ecological crisis that originally appeared at Burning Man.

Rodin's famous depiction of Dante's 'Inferno', amidst a sculpture garden of many of his other works.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

Singing sand that stands as the final remains of an ancient lake.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

Towering basalt columns, a creation of fire and ice.

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

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

This tiny cluster of abandoned buildings looks like the future of the ghost town - today!

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.

Officially named the "Loneliest Road in America," this barren stretch of Nevada road offers almost nothing but sky and open fields.