This hill and tower are steeped in legend, from King Arthur to the Holy Grail.

This astronomical clock is the second oldest in England.

The oldest residential street in Europe also features an optical illusion.

A fantastic castle rumored to be the birthplace of King Arthur.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

The best bagels in Berlin are tucked away in an independent bookstore.

Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

Ruins of a German castle on top of a towering stone pillar.

A Jenga-style cylindrical tower of books that appears to go on forever.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

Baroque celebration of the end of the Great Plague of Vienna.

Designed as a reminder of one of the darkest moments in Austrian history.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

Along the edge of this fountain are 365 smaller fountains that represent the days of the year.

A mechanical clock built in 1914, with a rotation of 12 historical figures on its face.

In an area known in Bratislava’s postal history, this sculpture sits equipped with a functional postbox.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

How did an Australian statue of the Bard of Avon end up in the Hungarian capital?

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.