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

A network of hundreds of interconnected wineries in caves hides under the town center.

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

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.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

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

New Orleans' famous cemetery, located on the site of a former race track.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

This expansive bridge in the Canadian wilderness was originally just built for friends.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

The 10,000 Torii shrine.

The second oldest continuously operating bar in Louisiana.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

The world's longest known cave system.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.