These Bronze Age rock carvings are among the oldest in the region.

The world's only above water sand volcano, believed to once be the bathtub of a priest.

A geological wonder that helped fuel myths of trolls and giants.

A peat bog in southern Sweden provides a cozy and photogenic home for junked Volvos, Saabs, and the occasional American muscle car.

Walking through this narrow gorge will make you feel like you've fallen into a fairytale landscape.

Iron Age grave stones and Viking burials, a short drive from Gothenburg.

This castle ruin in the middle of nowhere is a gem for wildlife enthusiasts.

The ruins of a monastery where Saint Bridget of Sweden had her revelations recorded.

This encrypted monolith protected a secret of Norse mythology by hiding in a church wall for over a millennium.

This makeshift concrete bunker is an unusual reminder of the Cold War.

The lost American era of gunfighters, bandits, Indians and steam trains is recreated in Sweden.

A spitting ode to a German serial killer.

Eight naturally mummified bodies in glass coffins are housed in an underground crypt.

There are two dozen tanks just sitting in an open field in Lower Saxony.

This beautifully designed star-shaped fort was the premier defense system of the late 1500s.

A decomissioned facility where the German "Transrapid" maglev trains were once tested.

This proud Teutonic warrior rises out of a German forest heralding a victory and measuring lightning.

The telescope that discovered Neptune.

This monument to those fallen in the World Wars is accompanied by a U-boat that Germany bought for a Deutsche Mark.

The Suurhusen church tower in Germany leans over farther than the famous Leaning Tower of Pisa.

One of the oldest wine cellars in Germany is now a restaurant beneath Bremen's town hall.

According to a satirical conspiracy theory that persists today, this German city of 300,000 is a hoax invented by the CIA.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.