An unfinished rail tunnel that has since been used to house cheese and bats.

The oldest bridge in South Carolina may have been designed by the same man who created the Washington Monument.

One man's extraordinary topiary garden in a small South Carolina town.

One of the oldest living oak trees in the Southeast.

This limestone outcropping was once a ceremonial site for ancient Native Americans.

This tiny 19th-century tunnel was built so a man could move his cows from one field to another.

An abandoned town is hidden in Great Smoky Mountains National Park.

This large cave is a summer home to thousands of bats and has a rich history dating back to prehistoric times.

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

Over 200 people were buried here with only a small stone to mark their final resting place.

This quirky local sculpture is quite literally a fish out of water.

Hiding behind a grocery store is a spectacular cavern carved as part of an old limestone quarry.

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

A bronze sculpture honors the 12 black students who attended the first integrated public high school in the segregated South.

A key producer of charcoal iron in the early 1800s, the structure still stands today.

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

The world's largest collection of porcelain "veilleuses-theiere," or night light teapots, includes four that belonged to Napoleon.

These early tent-shaped grave coverings are unique to Appalachia.

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

The "Jade Museum" is full of thousands of intricately carved works of art made from various precious stones.

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

A restored, one-room African-American schoolhouse in the diva's hometown now preserves the legacy of its most famous student.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

An unknown Hall of Fame in Jackson, Tennessee.