Over thousands of years, this slot canyon was carved out of the bed of an ancient lake.

A bizarre house filled with an astounding array of collections.

One of the last surviving C-97s sits in a field in front of a Wisconsin inn.

A stone marker memorializes the spot where the King broke up a street fight with a classic karate stance.

A bronze plaque marks the site of the only show the "King of the Soul Singers" ever missed.

Software company Epic Systems has created one of the strangest and largest workplaces of all time.

A bypass decorated with large wooden troll carvings.

This cave holds a surprisingly colorful variety of geological oddities.

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

The oldest house in Galena, Illinois, now is a reminder of when this city was the world's lead mining capital.

Dozens of large steel sculptures fill this two-acre park outside a former blacksmith's studio.

A tribute to the twin ideals of religion and patriotism, built by a Catholic priest from rocks, glass, and innumerable found items.

An underground wonderland in Iowa.

This long unused shot tower on the Mississippi remains a point of pride for a small city in Iowa.

For just a few bucks, this Iowa funicular will let you feel like an 1800s fat cat.

A hidden barn-sized rendition of Grant Wood's most famous, and most parodied, painting.

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

The farm toy capital of the world hosts a museum filled with toy tractors dating back to the late 1800s.

This 16-foot-diameter wooden coin has been standing in Iowa City since 2006.

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

Former hotel turned into haunted playground.

This monolithic statue was erected in honor of Chief Black Hawk (even if it wasn't made to look like him).

Legend says Dungeons and Dragons players can get their dice blessed at the creator of the game's memorial.

The face of a woman pushes its way through the earth.