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.

A museum dedicated to the tragedy of Bloody Sunday.

A hugely vast Irish landscape of barren rock that stretches for miles.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

Medieval streets buried beneath a papal fortress now form an underground city you can walk through.

This Renaissance palace features a unique architectural design and is now home to the Ferrara National Art Gallery.

One of the tallest bell towers in Italy plays a particular melody at just two times each day.

When a massive landslide hit one of the world's tallest dams it created a tragic environmental disaster.

With its mine closed, this old village is starting to resemble a ghost town.

A devastating landslide accidentally created this tourist hotspot.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

Five candy-colored villages on the Italian Riviera.

The secret medieval communication system will whisk your words above the noise of the crowd.

Gustave Eiffel's masterpiece until the Eiffel Tower was built.

This giant sculpture made of trash is a critique of society's wastefulness.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

Rejoice at Amsterdam's ‘pop temple,’ a former church reborn as a raucous music venue.

This sculpture of a rhinoceros suspended above a city square is meant to evoke the weight of the human condition.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

Drink wine handed out through a window as part of an age-old tradition.

Different sections of the Zemun Fortress were built in the 14th and 15th century as a response to the advance of the Ottoman Empire.