The world's largest museum devoted solely to the whirlybird comes complete with its own chopper graveyard.

Museum about life, death, and cannibalism in the Stone Age.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

Krakow's own version of the Hollywood Walk of Fame.

Remnants from a time before electricity.

Legend holds that this knife serves as a chilling reminder of the deadly rivalry between two local builder brothers.

A statue of an astronomer gazes at the sky as a tribute to Caroline Herschel.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

Modern art commemorates one of the first military actions of World War II.

A mysterious emblem tucked in an small alleyway is actually the coat of arms of a heroic medieval family.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

A merchant court dedicated to the fictitious King Arthur is heavily adorned with bizarre Renaissance art.

A prime example of socialist modernist architecture, wrapped in a enormous fresco about the media.

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

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

A monument to the man who almost killed Hitler.

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

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

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

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

An ornate private entrance to the Vienna subway built specifically for the emperor.

The topiary maze at the Habsburg hunting lodge.

A silly medieval mural preserved on the side of a Viennese house.

On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.