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

The world's longest known cave system.

The site of the one of the most deadly train wrecks in American history.

This replica of the Greek structure is in the heart of Nashville.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

Some North Carolina Cherokee have been keeping their history alive for decades with a single play.

A failed utopian experiment for British expats in the American South is now a Victorian village frozen in time.

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

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

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

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

Mile-long cave system near Great Smoky Mountains.

The secret city built by the Manhattan Project.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

Enormous lake at the bottom of a unique cave system.

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

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

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

This museum dedicated to an oft-overlooked support industry features a surprisingly moving brass diorama of a man being saved from a sinking car.

Live long and prosper in Tennessee.

This historic train station has been converted to a locomotive themed hotel.

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