An impressive monument to Poland's independence.

An abandoned football stadium with a tragic past.

These mechanical goats first battled it out in the year 1551, all because of an overcooked deer.

Reminders of the Battle of Berlin still scar the railway.

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.

One of downtown Berlin's last reminders of its Communist past.

The original burial place of this preeminent 18th-century Jewish philosopher was razed by the Nazis.

Visitors can explore the role of mysticism throughout the ages inside this interactive museum of magic.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

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

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

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

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.

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

A unique Holocaust memorial tells the personal stories of the Jewish residents exiled from greater Berlin.

A replica of the Liberty Bell rang daily from West Berlin's City Hall throughout the Cold War.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

Metro station with a claim to rock n' roll fame.

The architect of this fanciful complex called it an "oasis for humanity and nature in a sea of rational houses."

A secret hatch containing two parchments was discovered in this statue over 40 years after its installation.

Stone memorial that's said to predict the death of the pope and the site of the Cadaver Synod.

Remnants of a 4th-century church with vivid medieval frescoes and ancient sarcophagi hide beneath this old basilica.