Cursed swimming pool left abandoned is now a favorite of filmmakers and ghost hunters.

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

Week-long block party becomes a competition for the best decorated street.

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

Colorful and chaotic stacked hotel in North Holland.

The world's only museum devoted to the wonders of fluorescence.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

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

The winter home of millions of migrating monarch butterflies.

An Aztec snake god has taken the material form of an apartment complex.

This fantastical house shaped like a seashell brings aquatic design to architecture.

Part bookstore, part café, and part forest.

The jewel of western Mexico's archaeological legacy is this tiered circular pyramid now covered in grass.

A Mexican Romeo-and-Juliet-esque legend has given this super-narrow alleyway a reputation for romance.

A uniquely robust and historic look at Mexico's omnipresent dance with Death.

The freshest fish here are the ones you catch yourself.

One of the greatest maze designer’s greatest mazes.

This neighborhood thoroughfare is haunted by dozens of homemade monsters.

The world's shortest escalator doesn't seem to have any reason to exist other than to hold a world record.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

If they push on just the right spot, even the weakest person can move this titanic boulder.

One of the first hotel rooms in a pod.

Morocco's Argania trees are infested with nut-hungry goats.