A toxic ghost town sitting atop a massive coal fire.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

Once home to one of the oldest banks in the world, this building is also where Marco Polo's famous travelogue was written.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

One of the world’s smallest bars, just 13 square feet, is brimming with speakeasy flair.

An Italian vineyard invites religious pilgrims to stop by 24/7 to get their drink on, for free.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

A wrecked ship dating back to the American Revolution was only recently discovered off the Delaware coast.

The block of aged dairy is probably still edible after 2,300 years in a peat bog.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

A moody and picturesque riverside ruin overgrown with vegetation.

This beautiful Croatian fortress is haunted by legends of forbidden love.

This former estate of a fascist leader is now a burnt out ruin leading to a system of secret tunnels.

This Croatian fairytale castle is slowly falling apart thanks to years of neglect.

Legend has it fairies gathered at the site of this medieval castle.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

The remains of a sunken military ship wreck visible through clear water.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

The vast, legendary catacombs hold secrets much stranger than stacked bones.