The most visited, and possibly most controversial, museum in Germany.

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

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

The ancient tomb acts as a calendar that keeps perfect time.

A fearsome dragon clings to a corner of Munich's city hall.

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

Follow the original medieval paths that wind through this intriguing section of the city.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A floating cat sanctuary on an Amsterdam canal.

Tiny memorials honor individual victims of the Holocaust.

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

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

A museum dedicated to a Cold War era sausage.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

A fascinating insight into daily life in the Eastern Bloc.

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

The jaw of one of humankind's earliest ancestors on display at an overlooked geology museum.

It's good luck to be mocked by this monkey.

A garden in Lisbon filled with giant porcelain creatures.

After being lost for decades, this striking mural depicting the atomic bomb covers the wall of a busy Tokyo metro station.

Meet the world's longest tapeworm in a collection that really gets under your skin.

Once a black market electronics marketplace, now an otaku shopper's paradise.