The same security that protects our nukes accidentally protected a gentle herd of antelope.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

Thanks to a loophole in property ownership, this alleyway has become a cacophonous street gallery.

An experimental, automotive replica of Stonehenge.

One of America’s oldest and spookiest hotels, thanks to the residency of ghosts, dead presidents, and Alfred Hitchcock.

Every president in history is immortalized in bronze in downtown Rapid City.

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

South Dakota's oldest operating brewery is housed inside a historic firehouse.

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

A seven-story 1920s mausoleum outside Denver houses thousands of remains.

This elaborate towering structure was once famed for its revolutionary height.

A glass display case holds the document that ended the Second World War—which one person signed on the wrong line.

Race through the maze, get your name on the sign.

In the middle of a busy airport, a statue honoring the astronaut who told Houston that Apollo 13 had a problem.

A downtown park built on top of unclaimed graves.

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

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

This lovely pocket park is one of the most under appreciated in D.C.

Decades before the scandal, this staircase on the river was a literal "water gate."

A historic arena where the Beatles played their first concert in the U.S.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

This statue of one of baseball’s greatest pitchers looks like something out of a sci-fi horror movie.