A prison-like structure guards the remains of a notorious Old West outlaw.

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

The deserted railroad town had a last gasp as a ghost town attraction before being abandoned for good.

High in the Sacramento Mountains, a facility dedicated to studying the sun.

The empty town of Scenic, South Dakota, is owned by a church in the Philippines.

A relic of roadside lore and perhaps the first of its kind in North America.

A series of life-sized statues of each governor of the state of South Dakota.

This towering wooden Sasquatch was carved with a chainsaw.

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

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

The eerie remnants of an ancient forest were hidden under the sand for centuries.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

One man's quest to save his town with a trail of record-breaking sculptures.

A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.

In the middle of a desert subdivision, there is supposedly an impact crater site from Kcymaerxthaereal times.

The shortest river in America flows for just 201 feet.

Native Americans built this circle of stones, which was used to predict astronomical events.

The first declared National Monument in the United States.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

This replica of the Indian spiritual master Meher Baba's tomb stands unfinished in the New Mexico desert.

Located near the U.S.-Mexico border, this park remembers the famous raid of General Francisco “Pancho” Villa and his soldiers.

A half-acre utopia in the New Mexico desert features a graveyard, a game of horseshoes, a library, and a mailbox.

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

A beautiful geyser under environmental threat.