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

This funky former tobacco factory is one of the most striking examples of Madrid's cultural diversity.

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.

The only urban monument in the world designed by the great surrealist painter Salvador Dalí.

One of the largest ossuaries in Spain is packed from floor to ceiling with bones.

Village situated on a narrow volcanic escarpment.

This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

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

This Funeral Hearse Museum represents the finest in cadaver transportation.

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

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

A lush indoor jungle fills this bustling Madrid transportation hub.

A temple to modernity, tucked away amid Barcelona's more well known museums.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

Vibrant street art created with mixed media.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

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

A stately palace has been converted into the world's largest cannabis museum.

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

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

Bacteria and algae give the salty water its bubblegum hue.

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

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