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

Follow the steps, and this roadside artwork will teach you how to dance.

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

The site of the Scopes Trial contains a small exhibit dedicated to the famous case.

Crumbling ruins mark the site of a couple's grisly murder in the woods.

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

These eerie outliers of the lightning bug family glow a mysterious blue color.

According to local lore, this narrow passageway through two large rocks was accidentally created by the devil himself.

Giant instrument-shaped home in Fayetteville, Georgia.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

Mai Tais and Navy Grog served up in one of the original tiki bars.

This stone is a marker of one millionaire's personal vendetta against gravity.

A colorful square marks the heart of the city's LGBTQ community.

One of the world’s largest collections of paper memorabilia chronicles 4,000 years of papermaking.

Tour the sci-fi-esque reality of governmental disease management.

The world's first time capsule lies behind a welded steel door in Atlanta.

One person's lost luggage is another person's treasure.

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

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

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

These ancient ritual mounds are our best window into the culture of the ancient Mississippians.

The remains of one of America's first radiation testing grounds still rest ominously in a Georgia forest.

One of the Cemestos prefab homes built to secretly house thousands of Manhattan Project workers.