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

The facade of this 16th-century building is decorated with carvings of 300 seashells.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

Numerous sculptures set along hiking trails symbolize and idealize the relationship between man and nature.

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

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

Originally used to sell brandy, the bull-shaped billboard became an iconic symbol of Spain.

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

This Arab fortress was once the largest citadel in Western Europe.

Hundreds of preserved dinosaur footprints can be found along a hiking trail in this small village.

A charming Spanish village sits atop this natural limestone overpass.

Giant topiary dog once played a role in a terrorist bomb plot.

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

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

The oldest operating roller coaster of its kind, the Montaña Suiza has been thrilling riders since 1928.

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

A medieval village holds a very modern hotel.

For more than half a millennia, this automaton has rung an hourly bell.

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

This remarkable museum sprung from one of the most important prehistoric archaeological sites in the world.

This Gothic church houses ornate royal tombs and a magnificent gilded altarpiece.

The former home of a conniving 17th century politician is now a high-end hotel.

This haunting location was featured in the final scene of a classic spaghetti western.