Places AlexOnAdventure Wants to Go

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

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.'

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

A landscape decorated with enormous skull sculptures.

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

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

Stuck in the middle of a modern Madrid city block are the remains of a 19th century sports complex.

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

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

A 16th-century Andalusian palace.

Spain's stunning solar energy plant.

Visit a surreal landscape so otherworldly NASA actually used it to train the Apollo 17 crew.

A living art gallery painted on a canvas of Monterey pine trees.

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

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

Bacteria and algae give the salty water its bubblegum hue.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

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

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

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

Week-long block party becomes a competition for the best decorated street.

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

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