One toy collector's legacy of hundreds of unique items includes the most diverse display of northern indigenous dolls.

One of the world's premier laboratories for hydraulic engineering research takes full advantage of the water's power.

A 30-foot stack of piano keys memorializes one of the greatest keys players in jazz history.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

The whimsical construction on the roof has given rise to many a Montgomery myth about its contents.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

An ever-evolving wall of graffiti art off East Liberty Street.

This iconic water tower and failed bandstand is open for panoramic views once a year.

A Norwegian church that was built before Wisconsin was even a state has been entirely moved to a nicer spot.

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

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

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

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

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

This replica stave church looks like a piece of Norway was simply plopped down in South Dakota.

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

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

These giant metal horses graze on a hilltop near the Montana highway.

Modeled after a famous church in Vienna, Austria—but in Helena, Montana.

One man's quest to save his town with a trail of record-breaking sculptures.

The world's largest Holstein cow.