This folly built to commemorate an aristocratic victory over Catholic rebellion plays tricks on the eye.

The remains of a historic kiln once used to produce the famous Rockingham porcelain.

A stretch of land where the sour-sweet vegetable is cloaked in darkness and grows so fast you can hear it crack, squeak, and pop.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

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

Turntable anonymously received orphans, alms, and groceries.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Construction of Barcelona's iconic (but controversial) church is expected to be 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.

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

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.