A brush maker used his factory to protect blind Jews from the Gestapo.

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

The most visited, and possibly most controversial, museum in Germany.

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

Reminders of the Battle of Berlin still scar the railway.

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

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

Tiny memorials honor individual victims of 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.

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.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

Most prolific publishing house in the 1600s open to the public.

This modern arts center is built around a gem of late-Baroque architecture.

Meet the bronze beloved pet to a family of famous peeing statues.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

Cozy basement bar sports an inventory of over 2,000 beers.

This triumphal arch celebrating the Sun King's conquest of Lille is a masterpiece of military architecture.

This monumental mural crafted nearly 40 years ago is still in perfect condition.

What looks like a normal building is really a hollow facade hiding a subway vent.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

A poem by Arthur Rimbaud is inscribed on the wall of a street that, while it is only one block long, plays a key role in multiple novels.