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

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

The pan man stands as a testament to the functionality of American cast iron cookware.

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.

This beloved American snack was conceived by a hungry coal miner.

Live long and prosper in Tennessee.

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

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

A mysterious echo seems to defy the laws of acoustics.

Mussolini gave Cincinnati a bronze statue of Romulus and Remus suckling at a wolf's teats.

Constructed during the roaring 20s, this restored historic hotel recalls its past as home to the first in-hotel distillery.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

The "lovely red Vega" of the legendary record-settling pilot.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

The most decorated dog of World War I is preserved in the Smithsonian.

The national park was once a plantation estate.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The bad-ass ride of a soul legend, housed in one of the world's few soul museums.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

A completely round house designed for the Atomic Age.

This small church was constructed over the ruins of three temples dating to the Roman Republic.