One of the most photographed buildings in a city known for its Modernista architecture is an abandoned squat.

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

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

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

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

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.

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

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

An architect transformed this abandoned cement factory into his castle-like workshop.

This semi-secret storybook hedge maze is also the oldest garden in the city.

This imposing modern citadel started out as a home renovation project.

A once grand hotel now sits eerily abandoned in the Catalan countryside outside Barcelona.

Mountain where Jesus was first tempted by the Devil.