A Spanish town built into the cliffs.

This quaint Spanish village agreed to be painted blue as a marketing stunt but found that they preferred it that way.

Bold black and white motifs of life and death add a dramatic flair to this 17th-century crypt.

A historic Christian shrine nestled within a spectacular natural cave.

An abandoned Indian-inspired mansion.

The hidden ruins of an old hydroelectric plant reclaimed by nature.

An eccentric collection of antique items shares space with a prop-quality witchcraft museum.

A science fiction-inspired apartment building designed by a famous Spanish architect.

Village situated on a narrow volcanic escarpment.

The morbid items in this small and hidden museum are not for the weak stomached.

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

A landscape decorated with enormous skull sculptures.

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

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

A Spanish forest is filled with mysterious stone carvings.

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

A lush indoor jungle fills this bustling Madrid transportation hub.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

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

Wonderland replication in progress by one persistent man.

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

Bacteria and algae give the salty water its bubblegum hue.

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

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.