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

A beautiful but toxic fountain of mercury.

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

Abandoned waterpark turned counter-culture mecca.

Super Robot anime statue guards a forgotten suburban development in Tarragona.

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

Museum of amazing old toys and automata.

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

This ancient Spanish castle sits high upon a hilltop.

A modernist church in an ancient village.

Vibrant street art created with mixed media.

Commonly acknowledged as the only public monument to the Devil himself.

Cliffside houses provide a spectacular view from their perch above the valley.

A medieval village holds a very modern hotel.

"Alleys of Stone" form natural mazes in Spanish natural park.

This Navarrese cave's history of witchcraft and pagan ritual is not just embraced, but recreated each year.

A museum dedicated to the Spanish occult in a town that was terrorized by the Inquisition.

This futuristic observatory at the top of the Pyrénées offers unrivaled views.

Green labyrinth formed by a karstic maze hidden in a preserved oak forest.

Small French town or alien garage?

A chapel on a volcanic core, marking the end of a successful journey.

This modern museum of Mediterranean culture is surrounded by a surreal concrete honeycomb.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

Historic medieval fortified city in southwest France.