A huge musical instrument played by the ocean.

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

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

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

The Emperor Tiberius' palace of debauchery.

There has been an astronomical clock on this spot since the 14th century.

100 year tradition of fist fights, marked by marble footsteps.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

The only remaining collection of flayed figures made by French "madman" Honoré Fragonard.

The celebrated eyesore created by starry-eyed sweethearts.

Erotic art covers the walls of the largest ancient pleasure palace.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

France's most famous cemetery, with some of its most curious tombs.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

Pompeii's less famous neighbor is still revealing her secrets.