This colorfully-painted tunnel links two distinct parts of a historic neighborhood.

An art installation memorializing a tram stop, which became a tram stop.

A modern reimagining of a medieval city gate.

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

This hotel was once home to a steamliner company and became the final rest stop for Europeans heading to the New World.

A nearly 25-foot concrete sculpture of Sylvette, Picasso's muse.

These lights mark the area of Rotterdam that was bombed and burned in 1940.

A statue of the second-tallest Dutchman in history.

A strangely curved lamppost stands tall over this avenue in Rotterdam.

Four giant movable street lights decorate this modern Rotterdam square.

Abandoned limestone quarry from the 19th century, now a man-made canyon reclaimed by nature.

The highest point of this Balearic island is home to a historic monastery.

This remarkable prehistoric town is full of watchtowers and houses that have withstood thousands of years.

These ancient burial caves carved into the cliffs offer a glimpse into prehistoric funeral practices and Menorca's early inhabitants.

An image of the legendary saint stands in the shadow of a cathedral she liberated.

This unique prehistoric funerary monument is notable for its distinctive boat-shaped design and exceptional preservation, offering a fascinating glimpse into the island's ancient burial practices.

An old quarry transformed into a recreational and cultural space.

Extremely famous in his native country, this Cracovian painter is all but unknown beyond Polish borders.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

Legend holds that this knife serves as a chilling reminder of the deadly rivalry between two local builder brothers.

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

Inside this Krakow church, an explosion of psychedelic color.

This grubby wall is said to be one of the Earth's esoteric energy centers.