A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

An old quarry transformed into a recreational and cultural space.

The only remaining U-boat that is still floating never actually saw any action in World War II.

A spiralling hourglass-shaped tower rises from the forests in Denmark.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Hans Christian Andersen for the postmodern world.

This sublime architectural marvel is a rare example of an expressionist church.

The shiny silver little brother to Copenhagen's Little Mermaid statue.

A former hen house turned curiosity cabinet displays one man's lifelong fascination with cannibalism.

According to legend, this boat-shaped henge is built over the grave of a mythic king.

A Bronze Age stone ship said to be the grave of the mythical founder of Gotland.

This pyramid in southern Sweden houses the remains of an eccentric nobleman, who spent his life doing whatever he felt like doing.

A steel paper plane is all that remains of a crashed aircraft that caused an amazingly small amount of damage.

Dine on food tied to Viking history and legend at this subterranean Stockholm spot.

An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.

These layered sandstone mountains in China look like they are made of pressed crayons.

A total of 999 stairs lead visitors through a massive hole in a mountain known as the Gateway to Heaven.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Pop culture has helped to keep this iconic British building from being destroyed.