While knives are the main feature in this store, visitors will also find dinosaur bones and meteorites.

The site of the Scopes Trial contains a small exhibit dedicated to the famous case.

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

One of the Cemestos prefab homes built to secretly house thousands of Manhattan Project workers.

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

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

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

Live long and prosper in Tennessee.

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

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

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

More than five miles of underground passageways.

The secret city built by the Manhattan Project.

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

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

Enormous lake at the bottom of a unique cave system.

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