This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

Colorado's only true geyser is hidden within the San Juan National Forest.

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

This desert oddity hides in plain sight thanks to a cartographic error and a desert explorer with a punny sense of humor.

The tomb was guarded by soldiers from both sides of the war, and some left their initials carved in the brick.

The state's only comprehensive museum dedicated to the mineral that defined its history and economy.

A brass plaque dedicated to a convicted cannibal hangs in the National Press Club, and that's not even the craziest part of the story.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

Corn-inthian columns with a uniquely American take on neoclassical architecture.

A faded sign from the 1920s remembers Baltimore's resistance toward banning alcohol.

Each year, teams of the world's best snow sculptors have 65 hours to create frozen masterpieces.

The quiet canyon has a tumultuous history involving a doomsday cult.

People escaping slavery may have hidden inside a corpse vault.

Sasqu(w)atch out!

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

One of the best places to see feral Colonial Spanish Mustangs in the United States.

Local lore holds that Butch Cassidy took an escape route through Red Canyon's sandstone hoodoos after an attempted murder.

It would be easy to walk past this unusual piece of art and have no idea it pays tribute to the odd life of a real chicken.

More than 500 unique and specially designed cases collected by D.C.'s "Harmonica Case Man."

This Old West eatery along America's Loneliest Road was originally a stop on the Pony Express.

A humble plaque marks the site where the country music legend was found dead in his Cadillac.

The only statue of its kind to commemorate Washington's beginnings as an officer of the British Colonial Militia.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.