The tallest mud-brick structure in the world has been standing since the 1500s.

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

A fascinating insight into daily life in the Eastern Bloc.

Visitors can explore the role of mysticism throughout the ages inside this interactive museum of magic.

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

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

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

A prime example of socialist modernist architecture, wrapped in a enormous fresco about the media.

A socialist building dedicated to teachers showcases one of the largest Soviet mosaics in the world.

A small town Romanian cemetery filled with darkly humorous gravestones.

With its mine closed, this old village is starting to resemble a ghost town.

During World War II, this rice mill became a Nazi concentration camp.

In between two buildings in Ljubljana, medieval tunnel to nowhere.

Thousands of well-dressed mummies below a monastery.

This abandoned Slovenian military barracks has become a punky-political art squat.

The bar where "The Great Train Robbery" was planned was once a nexus of high society and low morals.

A Jenga-style cylindrical tower of books that appears to go on forever.

Hundreds of boat-shaped headstones fill this graveyard as part of a centuries-old custom with mysterious origins.

A collection of intricate sculptures so small they have to be seen through a microscope.

This statue of a falling man commemorates a teenage martyr of the Hungarian Revolution.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.