This abandoned island off the Venetian coast has been a radical monastery, a political prison, and a secret Nazi base.

This ghostly Alaska village still clings to a steep cliffside despite having been abandoned for over 50 years.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

An abandoned settlement originally established by British colonialists in the Andaman archipelago.

Ruins of a Carnegie family mansion on Cumberland Island.

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

This foolish Victorian sea fort was converted to a deluxe hotel.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

Remains of an abandoned coral city.

Once the most densely populated place in the world, this island is now a ghost town.

This beautiful example of Victorian engineering is the oldest water-balanced funicular anywhere in the world.

Contrary to what its name suggests, you won't find any bunnies here.

Before serving as James Bond's Casino Royale, this Victorian-era spa catered to the world's elite.

Remote Honduran Islands with a colorful history.