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

This 18th-century water provider for Aranjuez was refurbished in 2013 only to be neglected again.

The biggest depiction of Don Quixote's love interest in the whole world.

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

Rare karst landscape eroded from a flat seabed.

This enchanting natural park is a magical example of a temperate rainforest in Europe.

Mysterious Spanish catacombs of unknown origins.

This house's itty bitty size means no humans allowed.

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

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

Poet Antonio Machado's former residence offers the quintessential Castilian lifestyle of the provincial towns in the early 20th century.

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

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

This religious complex carved into a cliff is steeped in legends of miraculous stags and the Holy Grail.

A medieval village holds a very modern hotel.

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

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

This cemetery features modernist statues as strange as its name.

Of course Salvador Dalí lived in a castle...

One of Antoni Gaudí's least-visited works, an homage to Catalan patrimony that mixes neo-Gothic with Modernista forms.

Giant granite sculptures representing family on the northern coast of Spain.

The oldest Roman lighthouse still in use.

This line of 12 tower mills described in the story of Don Quixote is among the most iconic landscapes in Spain.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.