This humble hole-in-the-wall is home to an incredible pig ear sandwich and serious civil rights history.

This ancient settlement contains some of the largest earthen mounds in North America.

An eerie and beautiful group of columns mark the site of a grand mansion lost to time and fire.

The second-largest ceremonial mound in the United States is an artificial hill that is loosely shaped like a pentagon.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

One of the most acclaimed eateries in Arkansas is a two-table diner on the ground floor of a family home.

A church of bones, decorated with 40,000 human skeletons.

Eclectic final resting place of the controversial explorer.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

More than a century old, this trading post resides in the Navajo Nation.

Ming Dynasty necropolis raided during the Cultural Revolution.

The most famous location in China was home to whole dynasties worth of imperial rulers.

An homage to the pointers and retrievers that have long been a hunter's best friend.

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

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

This former maximum-security prison is creepy, sobering, and supposedly haunted.

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

This homegrown adoption center offers a wonderland of feline companionship.

Over a dozen Native American earth mounds dating back over 2,000 years dot this Tennessee archaeological park.

Elvis's own personal tropical hideaway.

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

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

A failed utopian experiment for British expats in the American South is now a Victorian village frozen in time.