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

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

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

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

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.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

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

A fully functional, 200-year-old remnant of the time when Brixton was mostly fields.

A distinctive former power plant turned university lecture hall looks like it could make you breakfast.

Legend says if you stick your thumb in the hole and it gets wet, your wish will be granted.

The castle still holds traces of the abandoned Roman fort it was built atop.

Memorials at a Florence railway station remember the citizens who were deported from Italy and sent to extermination camps.

A palatial former bank building now houses what may be the poshest art venue (and former Tesco) in Belfast.

It was once nicknamed "the most bombed hotel in Europe."

Thanks to an acoustic anomaly, this unassuming stone bench has heard one hundred years of secrets.

An accidental trick of light casts the perfect shadow of a pilgrim of the Camino de Santiago against the cathedral wall.

This World War II relic let Allied pilots know they were entering neutral airspace.

An unassuming tribute to engineer William Bald and the workers who built one of Europe's most scenic coastal roads.

A fearsome dragon clings to a corner of Munich's city hall.

A hidden three-foot-wide house separates these two regal churches.

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

This funky former tobacco factory is one of the most striking examples of Madrid's cultural diversity.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.