The longest non-mortared wall in the country is one man's tribute to his displaced Yuchi ancestor's five-year journey to her homeland.

You'll need cowboy boots to trek to this old-fashioned saloon nestled in a giant natural cave.

This architectural triumph is the only Frank Lloyd Wright house in Alabama.

Underneath this water pump, Annie Sullivan helped Keller speak her first words.

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

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

Elvis's own personal tropical hideaway.

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

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.

This replica of the Greek structure is in the heart of Nashville.

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

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

St. Augustine's record-setting narrow street was designed to protect against pirates.

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

An eerie smiling woman looms above the granite tombstones.

More than a century after her death, Little Gracie Watson remains one of Savannah's most often-visited residents.

A tribute to Ponce de Leon's supposed quest for eternal youth.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

This kitschy tavern is also home to rare early editions of "Treasure Island."

Electrical pylon in the shape of Disney's beloved mouse.

Manatees congregate around a power plant's discharge canal where the water is especially warm.

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

A flamboyantly decorated bridge signals diversity and fellowship at the entry to Indianapolis' Broad Ripple Village.