The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Statue dedicated to the star of an old television show.

A place to eat for on-the-run agents and espionage enthusiasts.

A unique botanical garden housed in three giant geodesic domes.

Wisconsin's most celebrated export gets the royal treatment on I-94.

This cave holds a surprisingly colorful variety of geological oddities.

Robots, lasers, and whoopee cushions, oh my!

A bizarre house filled with an astounding array of collections.

During the 19th-century, this park was a vital trading fort.

One man's unrequited love stands in a glass box forever.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

The first rural cemetery west of the Mississippi is home to the elaborate tombs of St. Louis' local beer barons.

This is not your typical jungle gym.

Less a museum than a bizarre fantasy world created by artists and engineers.

In 2004, a Dave Matthews Band tour bus dumped 800 pounds of waste off a bridge and onto an unsuspecting tour boat below.

Burial mounds of prehistoric Native Americans who lived along the DuPage River.

A tribute to one granddaughter's old apartment which now represents the whims of each visitor.

A mythical bird etched into the face of a rock doubles as the mascot for a nearby school.

This house renovated by Frank Lloyd Wright was the centerpiece of a lavish 20th-century estate.

This national park dedicated to the tallgrass prairie ecosystem still displays its military past.

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

An exhibit of items from the mental institution where Mary Todd Lincoln lived after her son conspired to have her committed.

It was originally part of a "terrible lizards" collection at the 1964 New York World’s Fair.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.