A mountain range on an active U.S. Navy base hides thousands of mysterious prehistoric rock carvings.

A hard-to-reach oasis in a desolate corner of Death Valley National Park.

A water tower shaped like a giant coffee pot looms over a small Swedish village in Central California.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."

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

This hidden fire lookout offers spectacular views of Sequoia National Park.

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

The interior of the Overlook Hotel in "The Shining" was based on this Yosemite original.

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.

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

Where the writer penned his famous story about a jumping frog.

An old-timey medicine shop that once served Chinese laborers during the Gold Rush is still open for business to this day.

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

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

Hidden beneath a lake for decades, this brutalist mine has now emerged from beneath the receding waters.

A cozy bookstore is tucked within an old gold mine shaft beneath the cafe and ice cream shop.

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

A quick trip around the globe through an amazing miniature exhibit.

The oldest pastificio in Queens offers visitors fresh noodles and a peek inside the macaroni-making magic.

At this hidden studio, the dying art of taxidermy is alive and well.

There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

A charming "tea atelier" hidden away in Greenpoint, Brooklyn.