This university transit system is a 1970's vision of the future.

This 47-story "M" needed 20 years to be completed

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

One of the oldest Mexican restaurants in the United States air-dries its trademark beef in a dangling outdoor cage.

Guitarist Paco de Lucía overlooks travelers as they pass through this train station dedicated to his legacy.

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

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

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

The medieval woodcut-style artwork chronicles life in medieval London.

Turntable anonymously received orphans, alms, and groceries.

A daily pyrotechnic celebration marks a beloved tradition during Valencia's festival season.

A wealth of pop culture statuary and green chile dishes give this roadside restaurant clout.

An iconic photograph from the Spanish Civil War saved this shrapnel-scarred historic house from destruction.

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

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

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

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

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

In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

Scary metal statues adorn some of the signature buildings of Burlington, VT.