This beautiful 19th-century temple stands atop the ruins of its predecessor.

The prototype for all Nazi concentration camps.

A slice of central Asia in the middle of Berlin.

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

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 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.

Where once there was a train station bathroom, there is now this German burger joint.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

Special benches that play Chopin's music are scattered throughout his native city.

After the famous composer died in Paris, his sister snuck his heart out of the country to honor his wish that it be buried in their native country.

This 13th century Gothic brick castle is the largest in the world by surface area.

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

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

Fantastic views and thousands of love locks.

This lurid German fountain plots the sad course of marriage from dating to death.

During World War II, the Nazis repurposed this beer cellar to store stolen artwork.

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

A museum that chronicles the history of the Nuremberg Trials for Nazi war criminals in the building where the trials were once held.

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

When this funny little building went up in the 19th century, most people thought it would simply fall over.

These elaborate gothic monuments honor Verona's medieval lords.

Not far from the more famous House of Juliet, visitors will find the supposed residence of her lover.