Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

Go surfing on this urban wave, "hacked" by local surfers.

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

A preserved college lock-up that recalls a clubhouse approach to discipline.

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

Böttcherstraße's bells, extolling Nordic virtues and the great conquerors of the world.

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

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

Before there were doorbells this bronze ear was installed for visitors to announce their arrival.

The remains of Alfred Nobel's first nitroglycerine factory can still be found on the shores of a Swedish bay.

The second oldest anatomical theater is housed in a museum of curiosities.

A man has revenged his true love's betrayal through tears and stone genitalia.

This wonky bit of historical taxidermy is experiencing a second life online.

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

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

Enormous pendulum helps keep Taiwan's tallest building from swaying.

This beautiful natural train tunnel is said to grant the wishes of visiting lovebirds.

When you've got to go, you've got to go.

A Gothic-inspired fish market is Gothenburg's best place to find loaves and fishes.

Legends surround an ancient tree trunk riddled with nails for good luck.

This Stockholm light tower can be controlled by anyone with a smartphone.

Home of the Large Hadron Collider and the birthplace of the World Wide Web.