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

Concerts, art, offices, and a café in what used to be Berlin's first crematorium.

A towering monument to war, located on a beautifully peaceful hill.

Named after a militant urban guerilla, this famous former squat is a graffiti-covered stronghold of leftist culture.

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

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

Art installations, derelict railcars, and endangered grasshoppers all call this south Berlin park home.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

The scars of World War II are preserved on its walls.

The footprint of a frustrated devil in Munich's Cathedral.

The patron saint of spinsters grasps a container of dried blood.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Claude Monet immortalized this medieval bridge in two of his paintings.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

This monumental fountain has moved around the city multiple times.

San Gennaro, the patron saint of Naples, greets pedestrians between these narrow city streets.

This medieval city gate is now a blend of the past and the modern world.

A rococo room covered entirely in porcelain originally constructed for another royal residence.

An unusual "skull with ears" sits in the crypt of this small church tucked away at the end of a narrow alley.

The burial place of an obscure North African saint was turned into a macabre body preservation factory for the 17th-century Neapolitan elite.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

A statue of an astronomer gazes at the sky as a tribute to Caroline Herschel.

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