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

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

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.

Formerly the most gerrymandered district in the U.S., it twisted and turned along racial borders.

The largest puppetry museum in the United States houses the world's most complete collection of Jim Henson artifacts.

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

The statues commemorate the legendary mass killing of escaped circus monkeys.

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

This boulder stays on its mountain thanks to a huge chain and on the map due to local legend.

Kentucky, Tennessee, and Virginia meet at this point in the Cumberland Gap.

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

After just one epic test blast, this literal loose cannon proved too explosive for combat.

This structure among the trees was the result of divine inspiration.

The record holder for the world’s largest peach.

A museum and doll store featuring a surreal and super sanitized version of where babies come from.

The secret city built by the Manhattan Project.

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

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

In one of America’s oldest mountain ranges, a long-awaited section of a scenic highway is now open to the public.

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

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.