One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

Automatons that were once removed after one fell from the building.

A statue commemorating a beloved stray dog who was adopted by the entire neighborhood where he lived.

A haven for book enthusiasts across the street from Retiro Park.

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

A window into a long-lost world, these colorful tiles advertise a long-defunct range of purgative teas, harmless smokables, and diarrhea cures.

Inside this church are the alleged remains of the patron saint of lovers, epileptics, and beekeepers.

One of the best examples of the modernist movement in Madrid.

Known as the Casa de las Siete Chimeneas, this haunted 16th-century manor has a dark, mysterious past.

Artist Natividad Sánchez wrote a new ending for one of Roman mythology's tragic love stories.

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

In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.

The little church's beautifully frescoed ceiling has earned it the nickname “the Sistine Chapel of Madrid.”

These ancient artifacts are a testament to the enduring significance of the bull in Spanish culture.

The largest oak in England is said to have been the hideout of Robin Hood and his Merry Men.

The ancestral home of beloved English poet Lord Byron has a bizarre history.

A 15th-century former coaching inn forms the implausibly grand entrance to a 1980s shopping mall.

The oldest inn in England served brew to the crusaders.

A striking 500-year-old mansion provides an unexpectedly sublime home for live deer and a menagerie of exotic stuffed animals.

Left by the Devil, an ancient quarry or just plain old erosion, this enigmatic rock pillar rises 28 feet from the hillside.

The longest stone bridge in England has an impressive history that dates back over 700 years.

Inspired by a dream, a hermit carved out a home in this sandstone bank to live a life of contemplation and prayer.

A hundred copies of Antony Gormley's naked body stare out across the water.