An early 20th-century bullring converted into a modern shopping center.

Visit a surreal landscape so otherworldly NASA actually used it to train the Apollo 17 crew.

This stunning iron gate designed by Modernist architect Antoni Gaudí is filled with mythic symbolism.

Volcanic rocks ground down into sand make this Spanish beach as black as night.

Partially collapsed lava tube and cave system complete with concert hall, underground pond, and unique albino crabs.

The chefs at El Diablo use heat generated by an active volcano to cook the food.

This plaza is home to a number of works, including Montpellier‘s own Arc de Triomphe.

Historic medieval fortified city in southwest France.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

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

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

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

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

Breathtaking and huge 430 year old maps of Italy.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

This ancient bridge made of stone slabs is said to be reserved for the devil to sunbathe.

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

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

The undercroft is a spectacular example of medieval Cistercian architecture.

Once a palace for the Archbishop of York, these 15th-century ruins now serve as a haunt for history buffs.

This English medieval castle is where King John died of dysentery.

The storied English village that pretended to be insane inspired NYC's nickname and the fictional namesake in the DC Comics universe.

The sanctuary seems to either float atop the water or sink into the dirt, depending on the water level.

Isaac Newton's former home, where the famous apple tree still stands.