Peri and Doug's Spain Adventure

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

Three bridges and one giant canyon make up this fantastic Spanish settlement.

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

Wonderland replication in progress by one persistent man.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

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

Cursed swimming pool left abandoned is now a favorite of filmmakers and ghost hunters.

A Romanesque tower appears when water levels drop.

Numerous sculptures set along hiking trails symbolize and idealize the relationship between man and nature.

A Franco-era dam flooded (almost) everyone out of this centuries-old Aragonese town.

Village situated on a narrow volcanic escarpment.

The abandoned ruins of a beautiful medieval castle just outside Barcelona.

A site where “the ravages of the war are more striking…than any other place in contemporary Spain.”

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

Mine shafts and hard pastries await visitors at this massive mountain of salt.

Earth's rocky history has rarely glittered so brightly as it does in this Spanish museum.

A huge cathedral single-handedly constructed by one eccentric monk.

This magical space partly designed by Antoni Gaudi is one of the best examples of romantic gardening in the Mediterranean.

This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.

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

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

An enchanting monastery in the Spanish countryside appears lifted from a fantasy tale.

Natural stone arches form a walkable "cathedral" at low tide, then disappear entirely when the water returns.

At the foot of a waterfall lies a peaceful swimming lagoon and evidence of over 60,000 years of human habitation.

Bacteria and algae give the salty water its bubblegum hue.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

A Spanish forest is filled with mysterious stone carvings.

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

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

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

This whimsical winery by Antoni Gaudí looks ripped from the pages of a fairytale.

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

This house's itty bitty size means no humans allowed.

This awesome Spanish castle is so fantastical it was actually used on Game of Thrones.

Abandoned Nazi train station turned underground astroparticle laboratory.

Abandoned waterpark turned counter-culture mecca.

Rare karst landscape eroded from a flat seabed.

Famed architect Antoni Gaudi built this generous thank you gift to a friendly host who housed him during a job.

This ancient Spanish castle sits high upon a hilltop.

A medieval village holds a very modern hotel.

A charming Spanish village sits atop this natural limestone overpass.

Now a pile of ruins and rubble, this was a lovely mountain town as recently as 1960.

A network of hundreds of interconnected wineries in caves hides under the town center.

An archeological treasure trove stumbled upon by a couple of children.

12th-century holy complex shares land with a natural park full of heavenly waterfalls and raptors.

Natural saunas fed by volcanic heat.