An ancient cave system in Tennessee’s Appalachian foothills converted to a 1,200-person music venue.

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

An abandoned putt putt golf course nestled hidden next to one of the local water towers and a local veterinarian.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

Meet manatees face-to-face at this zoo for native species.

In Florida, these naughty monkeys live on their own mini-monkey Alcatraz.

A brick-lined alley full of public artwork tucked away in downtown Gulfport.

Come for the boats, stay to explore the intriguing assortment of art.

Alabama has a fiberglass Stonehenge. With apologies to Spinal Tap, this one is full-size.

Orr Park's dead trees have been carved into a menagerie of whimsical visages.

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

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

Dinosaurs invade a suburban Nashville neighborhood.

Flaunt your karaoke chops at this pitch-perfect dive bar.

The only building in Louisville (hopefully) that contains two ancient holy skeletons.

Locals place their offerings on this nightmarish gnarled tree so the witches won't summon another storm.

This railroad overpass is said to be home to a murderous goat-man whose very legend has led to very real deaths.

Visitors to this arboretum are greeted by three smiling giants crafted from sustainable materials.

Enormous lake at the bottom of a unique cave system.

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

While knives are the main feature in this store, visitors will also find dinosaur bones and meteorites.

The scant remains of this flooded historic village can be explored in one of the most remote areas of the Great Smokies.

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

Site of a former hidden treehouse in New Orleans.