Paranormal investigators claim this abandoned asylum is the most haunted spot in the eastern U.S.

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

The oldest arched-covered bridge in Virginia has truly withstood the test of time.

This 5-by-6-foot wooden hut is the smallest historic post office in the U.S.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

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

This stone incorrectly marks the 35th parallel, causing some territorial kerfuffles.

An engraved boulder marks the spot where Patsy Cline's life ended in a plane crash.

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

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

Over 20,000 sets of spice shakers reveal the surprisingly telling history of our most basic spices.

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

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

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

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

More than five miles of underground passageways.

Visit this playground of waterfalls, caves and sinkholes.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

All that's left of the quintessential "cabin in the woods."

Home of an evil witch famous within southern folklore.

What else would you call a playground hidden in Alabama's oldest and largest cemetery?

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

Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.