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

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

This lonely gas station has stood at this location since 1917.

A dazzling display of red rocks weathered into spires and hoodoos.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

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

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

The hallowed remains of a 900-year old Ancestral Pueblo great house.

This abandoned bootleg attraction was built to cash in on the popularity of classic TV show, F Troop.

This Arkansas town is known for its gangster history, its healing waters, and now its brews.

A tribute to one man's legacy of improving the accordion's reputation.

The rogue roots are gradually consuming some of the historic marble grave markers.

An oft-overlooked, magically musical monolith that stands majestically between Arlington Cemetery and the Iwo Jima Memorial.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

An overlooked memorial honoring the local Washington residents who died in World War I.

There’s a hidden military meme engraved on the World War II Memorial.

Washington's iconic carousel has a nice piece of Civil Rights history.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

The fifth-longest natural arch in the world, and the longest outside China.

A huge musical instrument played by the ocean.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.