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

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Remnants of the most densely packed city in world history, that thrived on anarchy for 30 years.

This deceivingly ordinary warehouse hides an enormous collection of pop culture treasures.

The birthplace of the Ford Model T is now a museum full of antique cars.

Its history includes dinosaur fossils, cattle rustlers, Georgia O'Keeffe, and a mythical giant rattlesnake named Vivaron.

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

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.

A monument commemorating the role of Alaska's native Tlingit guides in the Klondike Gold Rush.

Originally a brothel during the Klondike Gold Rush, this bar once used dolls to denote when ladies were working.

The facade of this relic from the Klondike gold rush is decorated with over 8,800 pieces of driftwood.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

The scant remains of this flooded historic village can be explored in one of the most remote areas of the Great Smokies.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

Every fall this lake mysteriously drains, like a bathtub with the plug pulled out.

A sprawling collection of over 106,000 toys from around the world.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

A multi-storied adobe complex has been inhabited for more than a thousand years.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

According to folklore, Vermont's slanted windows were installed to keep witches from flying into the house.

A classic roadside attraction on Vermont's historic Route 5.