A Spanish artist builds his own castle.

A 16th-century Andalusian palace.

Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.

One of Europe's largest groups of dolmens remains largely off the typical tourist track.

A neighborhood park in the city of Cáceres hides what some believe are revolutionary examples of Neanderthal cave art.

Blue-green pools and smooth stones comprise one of Spain’s most idyllic hidden wonders.

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

This enchanting hamlet carved into the rock looks like something straight out of Tolkien's Rivendell.

An abandoned mine now resembles a post-apocalyptic landscape of derelict buildings and blood-red pools of water.

This public space is speckled with the eerie remnants of a defunct amusement park.