Scattered throughout London are ancient remnants of the city's former bounding wall.

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Model Trains and Much More in Hamburg.

Historic medieval fortified city in southwest France.

Two stone columns flank the grand Venice square, but there were supposed to be three.

The only museum with its curator—and her pets—buried inside.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

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

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

Berlin's old airport.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

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

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

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

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

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

Started as a kitchen garden, now the second largest botanical garden in the world.

This classic restaurant features a gorgeous mirror-clad room.

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