Hidden under a center for the elderly are the dungeons which were used during the Spanish Inquisition.

A 15th-century whalebone is tucked away in an unassuming corner of this medieval church.

Built in 1925, this glass-roofed shopping arcade is known for its modernist Italian architecture.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

This sculpture pays homage to the street sweepers of Madrid since its inauguration in 2001 in Plaza Jacinto Benavente.

A reproduction of the famous prehistoric cave paintings is hidden underground at the National Archaeological Museum.

Inaugurated three times, this tower offers some of the best views of Madrid.

This pedestrian footbridge honors Pero Jones, an enslaved African who lived in Bristol.

An homage to the first Spanish cyclist to win the Tour de France.

The largest public library in the United Kingdom was designed to reflect the industrial and artistic history of the city where it stands.

Take in a sweeping views of Guanajuato—and save yourself a hike up a steep hill—on this funicular.

A miniature replica of the canine that became the logo for a large recording company.

In addition to escorting prospective couples to and from ballrooms, this lane was also a place for gentlemen to settle scores.

This restaurant's specialty is "a major enigma for food historians."

Created by one of England's most prolific labyrinth designers, inspired by Bath city history.

Eighteenth-century home, where Herschel discovered the planet Uranus.

This roundabout commemorates the fourth International Polar Year.

The water of this well in Toledo lost its sweetness after the death of a young love.

The best place in the world to buy tinned fish.

This cuddly-looking statue symbolizes the bond between Spain and China.

This girder was hit by a bomb during the Spanish Civil War, but nobody knew about it until 2016.

Almost too short to be an actual street, this stretch of road maintains a unique moniker.

A masterpiece of Rationalist architecture in the center of Madrid with lizards on it.

Eat the ultimate iteration of Portugal's most beloved pastry.