Home to items never before seen by the public.

The first declared National Monument in the United States.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

The site of the climactic scene from the classic horror film is now a historic landmark.

A toxic ghost town sitting atop a massive coal fire.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

Stroll through a wonderland of stupendous moss-covered trees.

Enormous lake at the bottom of a unique cave system.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

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

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

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

Dramatic river bend surrounds a natural red-rocked pedestal.

On the Oregon coast there is a natural hole that seems to be draining the sea.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

A huge musical instrument played by the ocean.

A psychedelic labyrinth on the San Francisco bay.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Most-visited and most-photographed slot canyon in the American Southwest.

Rippling sand dunes frozen in the Arizona rock.