Ruins of a German Castle on top of a towering stone pillar.

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

The fairy tale castle of the "fairy-tale king."

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

Half a century after it was abandoned, this ghost town is coming back to life.

This fascinating museum in an old water tower holds the world's largest collection of Vodou artifacts from western and central Africa.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

French commune at the heart of conspiracies.

The 16th-century church was kept in its ruined state as a reminder of the casualties of World War I.

The largest underground church in Europe.

Ancient paintings known as the "Sistine Chapel of Cave Art."

A museum of magic with a Sadist past.

This museum houses an imposing skeleton army comprised of creatures great and small.

France's most famous cemetery, with some of its most curious tombs.

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