The little church's beautifully frescoed ceiling has earned it the nickname “the Sistine Chapel of Madrid.”

This small museum tucked within a subway station holds pieces from Madrid's past.

A towering monument in Spain has proven to be more labor-intensive than initially planned.

A rare set of strings by famed instrument maker Antonio Stradivarius is on display in the Royal Palace.

Part of the medieval watchtower is displayed in an otherwise ordinary parking garage.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

This fascinating and poignant museum chronicles every imaginable aspect of Spanish colonialism in the Americas.

This influential Renaissance-era library was once the haunt of kings and monks.

This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.

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

A curious memento mori hangs in the magnificent Cathedral of Segovia.

The medieval town's star-shaped walls are geometrically dazzling, though not entirely impenetrable.

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

1,300 chamber pots and their eccentric collector.

An ongoing medieval tradition of communal pig husbandry is honored with a handsome granite sculpture.

Images of neighbors past and present guard the streets of this charming alpine village.

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