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

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

Mile-long cave system near Great Smoky Mountains.

Enormous lake at the bottom of a unique cave system.

This museum pays tribute to the Cherokee leader who created a written language for his people.

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

This high point in the Great Smoky Mountains is said to be home to the chief of all bears.

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

An ode to "The Queen of Appalachia."

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

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

The ruins of an open-air theater built on this Georgia island in the 1970s.

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

Before TV meteorologists, there were weather kiosks. This may be the last one in the United States.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

These pretty kitties killed and ate as many as 135 railway workers.

How did a 2,000-year-old Roman column find its way to a Chicago park?

This improbable contraption was passed down through five generations of industrious Tennesseans.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

The remnants of the fortress that saved Georgia from the Spanish still stand guard on their swampy island.

Carved faces add a touch of magic to this island's impressive oak trees.

Georgia's first brewery is also one of its oldest surviving buildings.