This fairy-tale, neo-Gothic church in the Azores is a world of magical realism.

A unique seaside cave where Aleister Crowley faked his own death.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

An enchanting landscape of ancient sandstone structures eroded into otherworldly shapes.

These striking ruins of a castle resemble a ship's stern.

An arresting arch punched straight through a mountain provides one of the most scenic spots, and challenging climbs, on the planet.

A charming Spanish village sits atop this natural limestone overpass.

An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

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

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

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

Moorish signal station on a stratgic rocky outcrop.

The world's largest wooden structure.

Village situated on a narrow volcanic escarpment.

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

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

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

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

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

Bacteria and algae give the salty water its bubblegum hue.

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