This Tennessee museum is dedicated to a tragic railroad hero who inspired the famous ballad that bears his name.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

One of many gator theme parks, abandoned in the sugar fields of South Florida.

Official museum, hall of fame, and repository of the Texas Rangers.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

A historic coal mine that doubles as a museum and tourist attraction.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

This municipal playground was co-created by the father of one of the most playful characters ever.

This eagle-topped spire remembers the military commander who snatched up California for the United States.

This black shoreline is made up of exploded lava particles.

A heroic pigeon that, through a barrage of gunfire, delivered a message that saved over 100 lives in World War I.

Miniature art that tells an enormous story.

Limestone caves with spectacular showcase chambers.

Race through the maze, get your name on the sign.

Home to items never before seen by the public.

Disney's abandoned animal island is now an overgrown ruin that was almost the coolest attraction ever.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

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

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.