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.

This collection of over 50 classic pinball machines awaits visitors to downtown Roanoke.

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

Andy Griffith's hometown has made itself up to look like the fictional town of Mayberry.

An abandoned town is hidden in Great Smoky Mountains National Park.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

The fine fabric handwoven at Biltmore Industries was once coveted around the world.

A former Oz-themed attraction that has fallen into disrepair, but still holds some of the original magic.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

One street divides a single town that stands in two U.S. states.