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Bacteria and algae give the salty water its bubblegum hue.

Stunning Roman aqueduct used for 1900 years and still standing.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

The world's largest wooden structure.

Of course Salvador Dalí lived in a castle...

A completely underwater art museum sends a stark message about humans' impact on the environment.

The studio of Catalonia's most famous theatrical designer remains exactly as he left it.

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

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

A darkly erotic open-air statuary in Catalonia.

This religious complex carved into a cliff is steeped in legends of miraculous stags and the Holy Grail.

Giant granite sculptures representing family on the northern coast of Spain.

A Spanish artist builds his own castle.

This century-old ruined temple was reborn as "The Church of Skate."

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

The effect of this ancient form of image projection situated atop an 11th century Moorish palace is thrilling.

Vibrant street art created with mixed media.

A contemporary art installation housed within a Gothic cathedral.

Beautiful tiles decorate many of the town's surfaces and stand testimony to its glorious artistic history.

The streets of a sleepy Spanish town proudly exhibit some of the world's finest graffiti.

Living towers made of people that are now recognized by UNESCO.

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.

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

A beautiful but toxic fountain of mercury.

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

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

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

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

Wonderland replication in progress by one persistent man.

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

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

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

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

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.

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