The medieval institution is home to the precious treasure stolen in World War II in one of the greatest art thefts of the 20th century.

The oldest Jewish cemetery in Europe survived Hitler's Germany.

Puppet theater and museum holding a collection of more than 300.

This unique Renaissance castle was turned into a home for Nazi occultism.

A 12th-century fortress containing some of Berlin's oldest buildings.

A small but immensely extravagant palace built by the "Night King."

In one of the world's smallest countries, a royal's personal winery is open to the public.

This historical Netherlands fortress still bears the marks of its single siege.

A UFO-shaped event building originally intended to be a science museum showcasing the future.

The ruins of this Dutch castle sit atop a labyrinth of once-secret tunnels and passageways, dating back over 900 years.

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

A ruined castle stands atop a hill surrounded by dragon lore.

This stone amphitheater was once part of Nazi Germany's plan to promote propaganda.

This historic little railroad runs through some of the most beautiful scenery in Germany.

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

One man's personal kunstkammer, museum and shop.

The largest treasure hoard in Europe is contained in a castle that was bombed out during World War II.

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

After the construction of a nearby cathedral obstructed the view, the oldest belfry in Belgium was more than doubled in height.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

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

The history of German architecture is explored across this fairy-scale mini-city.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.