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

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

An experimental, automotive replica of Stonehenge.

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

The first declared National Monument in the United States.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

A battle between nature and architecture in the Cambodian jungle.

Khmer Rouge's high security prison.

The prototype for all Nazi concentration camps.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

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

Home of the International Space Hall of Fame.

The site of Billy the Kid’s most famous escape and the end to the Lincoln County War.

The final resting place of the living embodiment of the famous Forest Service symbol.

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

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Some 2,000 carvings show this rare desert spring has been an oasis for travelers for over a thousand years.

A frozen oasis lies beneath the scorching New Mexico desert.

The state bird of New Mexico, constructed entirely out of garbage.

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

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

The handsome statue is a tribute to the post riders who traversed 52 miles of tough Arizona terrain.