A giant bug impaled on a 75-foot-tall needle.

The Belgian library displays burned books that were salvaged from the fires of both world wars.

Above the door of a house, a plaque claims to commemorate the future living place of the inventor of time travel.

Where George Lemaître discovered the expanding nature of the universe.

This whimsical statue dumps water on its head to symbolize knowledge flowing into his brain. Or maybe booze.

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

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

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

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.

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

Check the time in 145 countries at once with this East German relic.

Reminders of the Battle of Berlin still scar the railway.

A haunting contrast of trains that both saved and took the lives of Jewish children in Nazi Germany.

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

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

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

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

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

This bike path traverses the treetops.

Single runway interrupted by a busy road that cuts across its middle.

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

These precariously placed ruins harken back to a 13th-century castle.