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

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

Hidden behind Lincoln's head is a chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

This towering wooden Sasquatch was carved with a chainsaw.

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.

The first declared National Monument in the United States.

Home to the deepest rift anywhere on Earth.

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

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

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

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

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

The world's last remaining store of its kind.

A vertically floating hemlock controls the waves and weather at Crater Lake.

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

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

The world's largest reflecting pool is just two centimeters deep.

This humble star-gazing center touts itself as the "Birthplace of American Astronomy."

This relic of transportation history still stands in this Indiana city.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

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

What is it about mushrooms that makes people wish they lived inside of them?

A castle built by an eccentric medieval enthusiast in suburban Ohio.