No one's quite sure where this quirky university tradition originated.

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

An obelisk commemorating Lincoln's role in connecting the coasts.

Chilly air billows out from the entrance of an abandoned mine on a steep hillside, providing a refuge for Ice Age fauna and flora.

No one knows the origin of this small town’s unique name.

Piled high inside this warehouse and coffee shop are salvaged goods that span every corner of the globe.

An Iowa town celebrates its heritage with the tallest working Dutch windmill in North America.

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

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

This historic motel standing at the "crossroads of America" offers a radio in every room and was saved by local protesters.

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.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

A fiberglass jungle, deep in the wilds of the Cleveland suburbs.

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

The beauty of urban decay, hiding some dark secrets.

Tour the sci-fi-esque reality of governmental disease management.

Bad farming practices caused this unnatural natural wonder.

One of the largest-ever mental hospitals now sits abandoned, surrounded by 25,000 unmarked graves.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

Stay in a room with a view... of the bottom of the ocean.

A haunted hill that supposedly defied gravity.

Where manatees are the snowbird vacationers in these balmy Florida springs.