An engineering wonder at Pillnitz Castle protects a precious 230-year-old flowering shrub.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

A museum in the building where Nazi Germany signed its surrender tells the story of World War II from the Soviet perspective.

A stunning two-story timepiece within a medieval Brick Gothic church.

Twisted buildings adorn the banks of the Rhine river.

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.

Tiny memorials honor individual victims of the Holocaust.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

Cold war icon and onetime "hole" in the iron curtain.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

In this truly magical place, rent hasn't been raised since the year 1520.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

The prototype for all Nazi concentration camps.

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

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

A fascinating insight into daily life in the Eastern Bloc.

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

Something's watching you.

The ancient Greek Titan guards this massive dam holding a lightning bolt to symbolize electricity.

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.