The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

A table rock formation that has been intriguing West Virginians for years.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

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

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

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

More than five miles of underground passageways.

This "Plant Farm Museum" is home to the divinely inspired and visionary outsider artwork of Reverend Howard Finster.

The perfectly named cave drop is the deepest in the continental United States, almost matching the height of Seattle’s Space Needle.

Georgia's highest point was given its strange name thanks to a simple translation error.

A curious whirlpool formation supposedly capable of entangling or engulfing branches, tree trunks, or whole rafts full of hapless tourists.

They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.

Enormous lake at the bottom of a unique cave system.

Mile-long cave system near Great Smoky Mountains.

North Carolina's finest examples of Native American pictographs have survived for 5,000 years.

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

A former Oz-themed attraction that has fallen into disrepair, but still holds some of the original magic.

A cult archaeology conspiracy theory claims these West Virginia petroglyphs were written by Irish monks in Ogham.

You can climb to the summit of Black Mountain, as long as you sign the waiver.

Eclectic architecture in the woods of New York.

A field in which God and his son Jesus purportedly appeared to a young farm boy named Joseph Smith.

An enormous overgrown greenhouse teeming with graffiti and wildlife.

These disused steel furnaces are now haunting ruins that may one day be a national park.