Macabre museum devoted to historical Viennese murders.

One of the largest squares in Europe contains an entire artificial island.

The incorrupt tongue of the patron saint of lost things is venerated in this basilica.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

One of the world's oldest working clocks is curiously missing the Zodiac sign of Libra.

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

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

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This verdant, tree-lined Reykjavik graveyard is both enchanting and eerie.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

A historic, reportedly haunted pub that provided inspiration for several famous adventure novels.

This 2,000-year-old Doric bridge is still open to pedestrian traffic to this day.

A medieval, mosaic-lined baptistry built by a heretical Christian sect.

A large statue of Pope Gregory XIII in Bologna was disguised as Saint Petronius to avoid destruction.

Time has been frozen at this station since the bombing in 1980—or so it was believed.

Stuck in the arcade of Casa Isolani are three arrows of mysterious origins.

The Adriatic's most famous wind can be reliably experienced in the city's Marina.

The pile of books behind the dignified writer gave the statue a most undignified nickname.

Where Venice's gondolas go for a tune-up.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.