This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

A Spanish artist builds his own castle.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

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

The former 1920s mansion of a prominent Catalan developer was used as the Soviet Embassy during the Spanish Civil War, and there is still a bunker below the garden.

A display of torture devices used in the Spanish Inquisition and other scourges of medieval Europe.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

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

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

A darkly erotic open-air statuary in Catalonia.

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

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

Famed architect Antoni Gaudi built this generous thank you gift to a friendly host who housed him during a job.

The lengthy skeleton of one of the tallest Spaniards of all time is on display in Madrid.

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

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

Volcanic rocks ground down into sand make this Spanish beach as black as night.

Rare karst landscape eroded from a flat seabed.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

A once grand hotel now sits eerily abandoned in the Catalan countryside outside Barcelona.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

A site where “the ravages of the war are more striking…than any other place in contemporary Spain.”

Earth's rocky history has rarely glittered so brightly as it does in this Spanish museum.