Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

Built on the foundations of an ancient Roman villa, the unique architecture of this castle on the Catalan coast was used as a set for 'Game of Thrones.'

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Venice's "Island of the Mad."

The abandoned military base looks like a post-apocalyptic wasteland.

The 700-year-old fortress was the site of Count Orlok's castle in "Nosferatu."

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

The site of one of the largest prison escapes of World War II.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

The home of the morbid art of corpse plastination is open for visitors to view the fascinating, but stomach-churning process.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

Now overgrown, these anti-tank barriers from World War II are sometimes called "dragon's teeth."

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

How did a French journalist’s grave become the sexiest statue in the cemetery?