An imperial church bombed to ruins during WWII now stands as a jagged memorial.

Super-heavy Nazi architectural experiment.

Berlin's old airport.

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

After a nearly successful attempt on Hitler's life, the conspirators met their fate in the courtyard of this Berlin building.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

The site where a plot to assassinate Hitler was planned—and its conspirators were executed—is now a powerful memorial to the German resistance during World War II.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

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

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

Tiny memorials honor individual victims of the Holocaust.

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

A monument to the man who almost killed Hitler.

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

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

A fascinating insight into daily life in the Eastern Bloc.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

Dedicated to a synagogue that was destroyed after having survived World War II.

Brass plaques embedded in pavement preserve the memories of those who lost their lives at the hands of Nazis during World War II.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.