This historic hotel invented the chocolate brownie.

A remote hill on a stretch of country road where the laws of physics are defied... or so it seems.

This cave holds a surprisingly colorful variety of geological oddities.

While there are no actual snakes in the history of this crooked road, there may be a number of dead horses.

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

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

The first declared National Monument in the United States.

An ornate Art Deco tile mosaic representing Nebraskan life, both modern and prehistoric.

This erect, phallic geological spire wasn't always named so domestically.

This museum started as a collection of Manhattan Projects and continues to add exhibits as they are declassified.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

A museum dedicated to the alleged Roswell Incident.

A fake mine that was made using real mining techniques which is also used as a community center.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

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 highest bridge in America was built for an almost unnervingly small amount of money.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

This spectacular track has run continuously since 1882.

Home with Gothic windows featured in a famous painting.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

To find the "unicorns of the deep" you've got to go downstairs.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.