Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

The lesser-known lost colony of Roanoke was a safe haven for formerly enslaved people during the Civil War.

The cruel trial of a 13-year-old boy inspired the creation of this now abandoned reformatory.

It may look like no more than a full-scale model, but every part of this full Space Shuttle stack had a working role in aviation history.

A propulsion engine testbed that paved the way for the Space Shuttle launch sits without recognition at this rocket center.

Enormous lake at the bottom of a unique cave system.

One person's lost luggage is another person's treasure.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

Live long and prosper in Tennessee.

Follow the steps, and this roadside artwork will teach you how to dance.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

A bizarre roadside attraction and the first instance of miniature golf in the world.

Georgia's highest point was given its strange name thanks to a simple translation error.

An impressive collection is dedicated to the legendary beast.

The mysterious 855-foot zigzagging stone wall has been baffling people for centuries.

World's largest college campus includes a wildlife sanctuary and a former movie set on more than 28,000 acres.

Incredible miniature towns and buildings created and decorated with thousands of tiny rocks.

These ancient ritual mounds are our best window into the culture of the ancient Mississippians.

A man's home is his castle.

This abstract roadside poultry was saved from demolition by outraged drivers and pilots.