An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

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

With a facade that measures just 107 centimeters, this five-story building is one of the skinniest in Europe.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

Former 19th-century apothecary serves a top-tier version of Valencia's signature cocktail.

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

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

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

This unassuming bookstore in the heart of Madrid is one of the oldest in Spain.

Order cookies baked by cloistered nuns in a 400-year-old monastery.

One of Madrid's most beloved statues is of an anonymous citizen.

After the queen of Spain had a dream where these statues fell and crushed her, they were removed from the palace and given new homes around Madrid.

A free park where visitors can learn about and collect 440 million-year-old fossils.

A miniature world of concrete and stone in Springfield, Ohio.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

One Portuguese poet described this cape, the westernmost point in mainland Europe, as "where the land ends and the sea begins."

A unique seaside cave where Aleister Crowley faked his own death.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

This tower once served as a radar station during the Cold War.

In the power of this waterfall, Alexander Hamilton saw the potential for industry.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.