The first car-centric shopping plaza in the U.S. brought a little bit of Spain to downtown Kansas City.

This otherworldly church spire reaches up toward the heavens.

Entombed in this strange, white stone hill are the deadly remains of radioactive weapons production.

A museum dedicated to man's boldest venture.

A geological oddity formed by two rivers carving out a mass of limestone on both sides.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

In the St. Francois Mountains in the Ozarks at 1,772 feet above sea level, Taum Sauk Mountain is the highest (and possibly oldest) peak in Missouri.

Giant granite rocks standing end-to-end like a train of circus elephants.

This is not your typical jungle gym.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

Erosion and time have created a naturally-formed water park.

European castle ruins in an American state park are actually the product of death and grief.

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

Community bookshelf of 25-foot-tall book spines.

At this Minnesota state park you can easily wade across the source of the mighty Mississippi.

America's silhouette includes 100 square miles of wilderness jutting into Canada thanks to an old mapmaking error.

14th century Norse artifacts in Northwestern Minnesota could have proved a Viking landing before Columbus.

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

The Midwest's reigning king of surplus stores is full of nothing you need and everything you want.

A whimsical sensor instrument for Minneapolitans to play on their walks to work.

This large midwestern cavern features impressive rock formations and an underground waterfall.

These curious caverns have been home to mushrooms, gangsters, and disco.

Half of a waterfall goes into the river while the other half seems to disappear.

This lab's maddening silence is good for business but bad for sanity.