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

No Gordon Lightfoot song, only a barebones monument to greed.

This prison-turned-museum is a remnant of the Old West's grizzly, violent past.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

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

The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

This replica stave church looks like a piece of Norway was simply plopped down in South Dakota.

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

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

"Not too many people can say they've had a nuclear bomb dropped on them, not too many would want to." — Walter Gregg.

One of the oldest living oak trees in the Southeast.

Nature's biggest mammal swims in landlocked Oklahoma.

The angel of death appears to weep black tears at this grave marker.

The largest earthwork effigy in the world.

Take a drunken tour inside the world's largest known geode.

The oldest still-existing mosque in the United States sits in a remote prairie in North Dakota.

A blank headstone topped with a pile of pennies marks the final resting place of the infamous assassin.

The land is home to swimming ponies and a legendary 18th-century treasure.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

This tiny patch of arid sand sits in one of the greenest states in the United States.

The eccentric mansion of one the most popular horror authors of modern times.

These elevated trucks were put in place as a middle finger to The Man, but are now considered folk art.

A unique attraction and museum dedicated to exploring iconic roadside structures.