The colonial city's social history is reflected in its fanciful door knockers.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

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.

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.

This massive blockhead sculpture hides an entire library.

Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

Mysterious 500-year-old tapestries depict a unicorn hunt.

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

A reproduction of earth's many biomes.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A museum devoted entirely to the rattlesnakes and snake-related art.

A burnt-out motel with priceless Native American artwork in the basement, redeveloped into apartments.

"I did this all while you were watching TV."

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

The palatial McDonald's that inspired Wesley Willis.

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

The 30,000-volume library is one of the world's most impressive poetry collections.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

Former bath house turns gastropub.