A mysterious plaque to the even more mysterious "Fr. Pat Noise," killed in "suspicious circumstances."

This neon landmark has been posing this deadpan question to follicly-challenged Dubliners for over 50 years.

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

The small alleys in Lübeck's Old Town are a result of medieval urban sprawl.

Dancing skeletal figures pay homage to a medieval mural destroyed during World War II.

A tilted half-timbered house from 1672 is built into a salvaged segment of a medieval wall.

A stunning two-story timepiece within a medieval Brick Gothic church.

A statue honors the local legend that the devil helped build St. Mary's church after being tricked into thinking it was going to be a wine bar.

The bells remain in a shattered heap exactly as they fell when the church was bombed in World War II.

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

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

Hamburgers are intensely proud of their tunnel beneath the river.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

The Frank Zappa fan club erected this monument to their prog-rock hero to mark a new era of post-Soviet Lithuania.

Started as a kitchen garden, now the second largest botanical garden in the world.

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

A whale rib was used to advertise the store by the arch that offered exotic goods from far away.

Pilgrimage site for star-crossed lovers.

Europe’s oldest natural human mummy.

Turntable anonymously received orphans, alms, and groceries.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

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

A monument to the man who almost killed Hitler.