Alongside this Memphis trail are several sculptures that show trail-goers how to relax.

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

Abandoned for 60 years, this submerged bridge was completely forgotten until the lake was drained.

The small cave that housed Tennessee's "first citizen."

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

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

The first full-scale tunnel built in America is short but scenic.

Dinosaurs invade a suburban Nashville neighborhood.

Home to drunken tower-climbing goats... seriously.

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

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.

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

More than five miles of underground passageways.

A monument to the King's final show, complete with a time capsule.

You thought Santa Claus didn't exist, but it turns out you were wrong.

Nature and art meet in this curvy creation

A museum and gift shop in a small Illinois town commemorates the work of E.C. Segar and the local figures on whom he based his characters.

Now nearly abandoned, Kaskaskia was once the capital of Illinois and one of the most important towns on the upper Mississippi.

The lowest point in the state of Illinois, at the confluence of the Mississippi and Ohio rivers.

The hometown of Popeye's creator is littered with a growing collection of granite cartoon characters.

In the Shawnee National Forest, amazing rock formations peer through the treeline.

River pirates, murderous bandits, and serial killers used this Illinois cave as their debauched hideout.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.