This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

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

This southwest-styled home in Santa Fe claims to be the oldest house in America thanks to an ancient bit of foundation.

A black cottonwood gets a second life as a home for books.

This rustic old building is said to be the most photographed barn in America.

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

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

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

South Dakota's oldest operating brewery is housed inside a historic firehouse.

One of America’s oldest and spookiest hotels, thanks to the residency of ghosts, dead presidents, and Alfred Hitchcock.

Thanks to a loophole in property ownership, this alleyway has become a cacophonous street gallery.

Every president in history is immortalized in bronze in downtown Rapid City.

This shallow pit was once used to send over 20,000 buffalo plummeting to their death.

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.

You thought Santa Claus didn't exist, but it turns out you were wrong.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.

The North Carolina grounds are leased in perpetuity to the British Commonwealth for as long as the WWII sailors are buried there.

The time thousands of bags of chips washed ashore in the Outer Banks is memorialized in a local museum.

The only known Futuro house in North Carolina sits along a stretch of desolate highway on the Outer Banks.  .

This historic sunny-yellow building has an unfortunate connection to the sinking of the Titanic.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

The lesser-known lost colony of Roanoke was a safe haven for formerly enslaved people during the Civil War.

Perhaps the oldest vine in North America, this sprawling plant helps make a sweet wine.

This old-fashioned carhop restaurant gave the world the waffle cone.