In the center of Wrocław's old meat market stands a somber tribute to the city's livestock.

Travelers who fall victim to this mermaid's charms are destined to stay in Užupis forever.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

This floating sculpture of ice is a poignant reminder of nature's power.

A miniature model of the iconic Stockholm department store.

The first mosque in the world to receive electricity.

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 giants in Catalonia are now displayed in a 14th-century Gothic church.

A former steam-powered mill from the 1800s is now an industrial park with a giant steel dragon slide.

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.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

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

Known locally as the Jungfrutornet, this Medieval tower hides a dark legend.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.

This hidden collection of everyday objects illustrates life within communist Poland.

A collection of old neon signs from all over Poland line a secluded courtyard.

This roundabout was renamed in honor of the Swedish king's royal fender-bender.

The charming storybook building now houses a small police museum.

A former suicide bridge is now accumulating symbols of love instead of a body count.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

The silly symbol for an underground protest group is now scattered around the city.