The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

This rustic cabin, outfitted with gun slits, was once home to John D. Tewksbury, patriarch of the bloodiest family feud in American history.

An urban laboratory.

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.

A lush indoor jungle fills this bustling Madrid transportation hub.

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

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

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

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

This colorful statue welcomes visitors to a Barcelona park.

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.

A pair of gigantic baby heads greet passengers at Atocha Station.

The space-age building is home to one of the few remaining rotating restaurants in America, and the only one that inspired a 1980s sitcom.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

A giant knight, sex education, date shakes, and Jesus coexist happily in this Coachella Valley desert oasis.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

Crafted in 1911, this steam locomotive spent its entire working life in Flagstaff.

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

This small, unassuming street is now a canvas for color and creativity.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.