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

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

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

An architect's childhood fantasy treehouse made real.

A beautiful geyser under environmental threat.

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

A little-visited ghost town state park offers a glimpse into Montana’s "Silver Queen."

Calidum et Deliciose Succosum!

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

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

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

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

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

A fitting attraction for the corn capital of the world.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

The first declared National Monument in the United States.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

A statue honoring 44 continuous years of greeting passing ships.

More than a century after her death, Little Gracie Watson remains one of Savannah's most often-visited residents.

An eerie smiling woman looms above the granite tombstones.

"X" marks the spot of an echo chamber in the middle of a plaza.

This haunting tombstone comes complete with a heartbreaking story of love and loss.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.