A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

Take a drunken tour inside the world's largest known geode.

The plants form a living library and laboratory for researchers and students at Michigan State University.

The unusual medical inventions of the man who gave the world Corn Flakes.

Largest magic museum in the United States with more than half a million pieces of memorabilia.

The remains of an abandoned dinosaur theme park litter the woods just off the highway.

This cave holds a surprisingly colorful variety of geological oddities.

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

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

A giant pair of thick black glasses mark the tragic demise of a trio of rock and roll legends.

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

A museum, walk-through diorama, and library nestled under one castle-like roof.

The lowest point in South Dakota and the source of the Minnesota River.

Dedicated to the history of the 1,000 nuclear missiles that once covered the Great Plains.

This Wild West attraction is alive with glitching automatons.

A cemetery housing wild west legends in South Dakota.

The ravine where Jesse James supposedly performed an impossible jump to evade capture.

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

One tree's homage to soles past and present.

The humble Hoosier roots of a famed Broadway composer.

Discover a beautiful natural paradise, minutes away from a thriving city.

A waterfall 600 ft. inside a mountain, once the bane of gold miners, is now a spectacle of nature.

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

One of America’s oldest and spookiest hotels, thanks to the residency of ghosts, dead presidents, and Alfred Hitchcock.