This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

Enormous terracotta heads of Queen Elizabeth and Prince Phillip can be seen on the side of the road to Windsor.

The site where one of the most famous poems of World War I was composed is preserved to honor the legacy of the work.

A moving memorial to the fallen and missing from WWI trenches.

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

Ancient snack bar of the Roman Empire re-opened.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

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

The history and future of cannabis.

Museum preserving torture methods from the past.

Largest illuminated advertisement sign in the world.

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

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

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

A restaurant and observation deck built in a unique broadcasting antenna.

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

A fascinating insight into daily life in the Eastern Bloc.

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

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

Blitzkrieg bop your way through Berlin's Ramones Museum.

The prototype for all Nazi concentration camps.

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.

The music is over at the Ballhaus Riviera Ballroom, but the ballroom remains in haunting disrepair.