A tiny mosque decorated with mosaics using an early form of recycling.

This historic textile city was abandoned after being ravaged by fire.

The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.

Life-sized bronze statues of fictional puppet characters.

The bones of the Biblical Magi traveled to Constantinople and Milan before landing in their current home inside an elaborate golden reliquary in the Cologne Cathedral.

How did a lighthouse wind up in the middle of this landlocked German city?

The body of at least one victim of a construction accident was left behind in the collapsed pylon, buried under tons of concrete.

If the tunes of antique organs and musical marionettes don't intoxicate you, the draft beer certainly will.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

The birthplace of Karl Marx is now a museum dedicated to the communist revolutionary's life and work.

The last bastion of Roman presence north of the Alps looms over a German town.

A neo-gothic statue modeled on German Emperor Kaiser Wilhelm II, which had its distinctive mustache shaved off by Nazis in World War II.

A neighborhood church's unusual abstract stained glass was the final project of avant-garde artist Jean Cocteau.

A Hungarian pharmacy museum with a box full of mummy powder.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

Stockholm's tiniest statue is of a small boy looking at the Moon.

A 130-year-old urinal is the oldest of Stockholm and perhaps all of Sweden.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

The oldest continuously operating pharmacy in Europe.

This free museum is building a collection of books that are banned, censored or burnt around the world.

A medieval setting reimagined into a unique art alley.

The first monument in Estonia that was made by an Estonian sculptor.

This pair of unsuspecting buildings are in fact the very first modern skyscrapers in Europe.