The longest navigable underground river in the United States is home to countless blind and albino animals.

Chicago's North Park Village was once the largest municipal sanatorium in the country.

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

These molds for fiberglass statues have formed an eerie, accidental sculpture park.

Giant six-pack could provide one person a six-pack a day for 3,351 years.

This water tower has been a staple of the Rochester skyline since 1931.

Ever wanted to can Spam?

These massive mitts are made of 30 tons of devotional bronze.

Whimsical bronze sculptures of smiling coins and houses await visitors to this park.

A preserved stretch of ancient fossilized trees with an impressive gem collection to boot.

This 12-foot-tall T-rex is the largest K’Nex skeleton sculpture in the world.

Famous for its bio-luminescent inhabitants, known as "dismalites."

You'll need cowboy boots to trek to this old-fashioned saloon nestled in a giant natural cave.

Visitors to this arboretum are greeted by three smiling giants crafted from sustainable materials.

Rabbit Hash is a heaping slice of Americana from another era, with a very peculiar origin behind its unusual name.

Locals place their offerings on this nightmarish gnarled tree so the witches won't summon another storm.

Eight rare Corvettes are swallowed up by a sinkhole in Kentucky's National Corvette Museum.

Beautiful waterfalls grace a canyon visibly torn by a violent tornado.

Kentucky, Tennessee, and Virginia meet at this point in the Cumberland Gap.

One of the few surviving "Wigwam"-themed motels.

The world's longest known cave system.

An unlikely beach paradise of giant sand dunes lies between two lakes just a few minutes from Michigan's cherry country.

Strange physical sensations and optical contradictions keep visitors coming back for more.

The site of a 19th century "dream city" that almost rivaled Chicago before being swallowed by the Indiana sand dunes.