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

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

The third tallest lighthouse in America once guided author Stephen Crane to safety.

Former utopian colony based on the belief that the universe exists in a hollow sphere.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

When this test site was abandoned, they didn't even bother to take the rocket with them.

This remote Scottish isle is only inhabited by seals, birds, and the memory of a tragic settlement.

Dr. Strangelove-esque tours reveal the inside a bunker once reserved for Stalin himself.

Just a few miles off the western coast of Ireland lies an isle steeped in Irish literary history.

Once featuring over 60 miniature replicas of famous Chinese locations, the Splendid China theme park was completely abandoned and is now mostly rubble.

Thousands of rusting train cars have been slowly falling apart on the edge of Greece's second largest city.

The gutted remains of this Estonian mansion are a monument to a tragic love.

The remains of an entire Roman city can be explored in this interactive museum.

One of the largest barracks of the Austro-Hungarian monarchy's military is now an abandoned ruin.

A star fort along the C&O Canal in western Maryland that protected America in three wars.

This Colorado hiking trail provides a small gold mine of abandoned gold mines.

This crumbling, graffiti-covered mansion sits tantalizingly within reach of the proletariat who frequent a public park.

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

This castle-fortress is a living example of the transition from medieval defenses to modern fortifications.

Charleston's historic city jail once held everyone from pirates to Civil War POWs.

Despite being burnt down multiple times, the ruins of this South Carolina church are still standing.

The oldest amusement park in the world has been providing a nice spot to have some fun since the 1500s.

A former Latvian headquarters of the brutal KGB secret police is now open as a grim reminder of their atrocities.