This tower in a small Polish village uses the power of a sacred bell to ward off mischievous weather spirits.

The silly symbol for an underground protest group is now scattered around the city.

No one knows who built this strange cave of worship or exactly why.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

A statue in the heart of Edinburgh honors a bear that served in the Polish military during World War II.

The final resting place of soldiers' loyal canine companions.

A sinuous path among steep cliffs creates a stunning sight in southwestern Serbia.

Celebrated example of Ottoman architecture that also served as a site for brutal massacres.

A bridge destroyed three times: once as a ruse, then in an actual attack, and finally for the movies.

The natural mummy of the less than chivalrous Knight Kahlbutz.

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.

Terrifying derelict military hospital once housed a recuperating Hitler.

Solar observatory doubles as a daring display of Expressionist architecture, much to Einstein's chagrin.

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

The non-native bovine herd was brought in to help conserve these Berlin wetlands.

An eerie, derelict amusement park in Berlin.

Art and a pun, all in one.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

These brass bunnies honor the rabbits that dominated the no-man's-land around the Berlin Wall.

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

Reminders of the Battle of Berlin still scar the railway.

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

A museum dedicated to a Cold War era sausage.