Sandstone rock formations that look like they belong on the cover of a progressive rock album.

A quirky old tree covered in tokens, cans, and bottles of wishes.

A sculpture for the sun and stars, created by Nancy Holt.

This former rail stop in Utah was abandoned, repopulated by some nostalgic friends, and now is home to a single DIY aviator who lives in a hangar.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

A self-built castle made by a mysterious man.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

The world's second largest single-dish radio telescope, once used to contact E.T.

Bill Murray bowled three straight strikes here at Reno's "Taj Mahal of Tenpins."

The world's first nuclear power plant is open to visitors looking to role-play a meltdown.

Home to the deepest rift anywhere on Earth.

This museum glorifies the humble potato.

Pyramid home to an obscure religious group that practices modern mummification.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

This museum started as a collection of Manhattan Projects and continues to add exhibits as they are declassified.

Natural sonic phenomenon comes with a grisly legend of murder and blood.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

A cave's rare beauty held a cavernous secret hidden underground.