A magnificent, long-abandoned castle built in the wake of the reconquest of Spain.

A hidden medieval crypt where a famous legend says the devil used to teach black magic.

Two large eyes painted anonymously on a mountain overlooking the city pay homage to an old legend.

This enormous censer uses a pulley system installed over 400 years ago.

A historic Christian shrine nestled within a spectacular natural cave.

Geological storytelling.

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

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

Cliffside houses provide a spectacular view from their perch above the valley.

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

Turntable anonymously received orphans, alms, and groceries.

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

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

This lucky bronze frog was gifted to Madrid by a casino.

Commonly acknowledged as the only public monument to the Devil himself.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

An ancient Egyptian temple in the middle of Madrid, Spain.