From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

Neither bomb blasts nor heartbeats escape the giant ears of this super sci-fi Arctic outpost.

An experimental forest at the foreground of arboreal science is also the canary in the coal mine for climate change.

A Cold War atomic camp buried under the ice is now emerging because of global warming.

This Greek cinema was architecturally inspired by Mussolini's vision of a fascist Mediterranean utopia.

A sharp sculpture made of thousands of pieces of jagged glass.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.

Giant marble phalluses on the sacred island of antiquity.

One of the most iconic neon ads of former East Germany.

Four-story slides send people whizzing through the math department at this Munich university.

First museum dedicated to the research and history of Epilepsy.

A two-inch thick solid brass rod that extends an astounding one kilometer straight into the earth.

A small concrete monument remembers a German cold case involving incest, farm tools, and psychics.

The sweet story of how American cargo planes became known as "Candy Bombers" during the Berlin Blockade.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

This massive steel pyramid can be entered by a set of jagged steps that let visitors stand in its heart.

This peculiar museum offers hands-on interaction with seemingly intangible principles of mathematics.

The world's biggest pet store.

A Nazi concentration camp and Anne Frank's place of death.

The ruins of an abandoned crematorium haunt an eerie deserted German cemetery.

This lurid German fountain plots the sad course of marriage from dating to death.

A fascinating little museum dedicated to the thousands of chemical substances concealed in our food.

This former Nazi castle was built as a school to train what would have been the future of the Third Reich.