This wondrous hideaway is suspended in a bamboo forest above a sanctuary for rescued llamas and alpacas.

One-of-a-kind museum inside the first Boeing 747-400 ever made.

Performers, intricate sets, and a real speakeasy tell the story of the 18th Amendment.

This kitschy tavern is also home to rare early editions of "Treasure Island."

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

Healing Springs that once ran red with soldiers' blood.

An impressive collection is dedicated to the legendary beast.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

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

This replica of the Greek structure is in the heart of Nashville.

Mile-long cave system near Great Smoky Mountains.

More than five miles of underground passageways.

Visit this playground of waterfalls, caves and sinkholes.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

Enormous lake at the bottom of a unique cave system.

A luxuriant botanical garden below sea level.

The site of a gold-digging conquistador's bloody landing in the Americas.

Step back into the glory days of Florida's nascent tourism industry at this Gilded Age palace.

This neon lit Georgian cave claims to hold the boulder Prometheus was chained to.

Hidden behind musical flora and forgotten for over a thousand years, this cave is now a neon dream.

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

The studio built by fascists in the hopes of "reviving the film industry" with the occasional propaganda film opportunity thrown in.

The remains of a town so thoroughly destroyed by French forces that the citizens simply left.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.