A building so large that it has its own weather.

Go inside to really appreciate this 500-year-old technological masterpiece.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

The medieval institution is home to the precious treasure stolen in World War II in one of the greatest art thefts of the 20th century.

This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.

An ornate century-old elevator still connects the two halves of Bad Schandau.

The "Prussian Versailles" that is as glorious today as when it was built.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

Terrifying derelict military hospital once housed a recuperating Hitler.

Former villa and estate of James Deering developed to preserve native tropical forests.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

An impressive monument to Poland's independence.

The traditional Polish croissant, folded 81 times into the shape of a horseshoe, is a legally protected cultural treat.

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

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

From Iggy Pop to David Bowie to Nick Cave, this regal music studio has served some of the all time greats.

A 12th-century fortress containing some of Berlin's oldest buildings.

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

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

A traditional U-Bahn station in Berlin gets a string of rather untraditional benches.

Metro station with a claim to rock n' roll fame.

A monument to the man who almost killed Hitler.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.