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

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

This Navarrese cave's history of witchcraft and pagan ritual is not just embraced, but recreated each year.

This open air archeological site houses almost as much wildlife as it does classical religious artifacts.

An abandoned saucer-shaped monument in the Bulgarian mountains.

An architectural marvel that spans the Arda River, and has stories of a haunted past.

This memorial park stands on the site of one of the largest mass executions of the Second World War.

In a long-dry lake bed, these groups of massive stone pillars bear a striking resemblance to clumps of everyone's favorite fungi.

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

Temple complex that once housed the famous statue of Nike.

Ancient Greek oracle of the dead.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.