Home to the deepest rift anywhere on Earth.

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

A monument to the egos of two railroad magnates that fell into decline along with their careers.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

One of the smallest towns in the United States.

A miraculous natural phenomenon known as "the spring that breathes."

Rather than a run-of-the-mill franchise hotel, this lodging has been decked out in dinosaur decor.

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.

A mental health hospital dating back more than 139 years, now features a museum.

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

This Boeing KC-97 tanker is now a restaurant for aviation lovers.

This super steep hike ascends 2,000 feet in less than a mile.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.