Twisted buildings adorn the banks of the Rhine river.

Go surfing on this urban wave, "hacked" by local surfers.

Horrifically creative torture devices and shame punishments line the walls of this chilling museum.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

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

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

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

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

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

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

The "Prussian Versailles" that is as glorious today as when it was built.

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

A German apartment building hosting as many trees as human occupants.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

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

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

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.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.