This building has survived for more than a century and remains virtually untouched.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

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

A much-loved sculpture depicting the hero of a 1956 anti-Soviet uprising.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

On a teardrop-shaped island in the Danube, the ruins of a convent and the final resting place of a saint.

A 13th-century convent where St. Margaret of Hungary spent her teenage years.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

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

This watchtower once presided over the Berlin Wall.

Someone loved this song enough to carve all of its lyrics onto a tree trunk in a Berlin park.

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

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

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

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

One of the world's heaviest musical instruments towers within a popular urban park.

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

Tiny memorials honor individual victims of the Holocaust.

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

The 16th-century church was kept in its ruined state as a reminder of the casualties of World War I.

A monument to the thousands of Canadian soldiers who died capturing the French ridge during World War I.

Built in 1347, this belfry is one of the oldest in the world and survived intense bombing during World War I.

This bunker in northern France was built by Nazi German forces with the intention of launching up to 50 V2 rockets at London each day.