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

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

Catch beautiful views at the graffitied observation deck on this mountain top.

A replica of one of the more than 15,000 civilian lookout towers that lined the U.S. coast during World War II.

What started as three small gnomes at the base of a tree has grown into a full-blown gnome home.

Disney World's very first waterpark is now an abandoned ruin being reclaimed by the swamp.

Electrical pylon in the shape of Disney's beloved mouse.

This natural spring is the winter home to the largest gathering of manatees in the world.

This statue and its surrounding plaques tells the story of Ko-kwal-alwoot and the kinship between the Samish people and the sea.

On the edge of this small Washington Park, a piece of the Earth's mantle has come to the surface.

This dilapidated ship carcass covered in trees is a striking sight.

This labyrinth was designed to help visitors focus and meditate.

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

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

Florida castle built with aluminum printing plates.

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

This Transylvania County city is home to a rare white squirrel population that is descended from an escaped carnival animal.

A historic dam made famous for its turbines and feature in a Hollywood classic.

One man has spent decades faithfully constructing this unique brick and cinderblock castle.

Enormous lake at the bottom of a unique cave system.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

The mysterious 855-foot zigzagging stone wall has been baffling people for centuries.

Ruins of a Carnegie family mansion on Cumberland Island.

Incredible miniature towns and buildings created and decorated with thousands of tiny rocks.