Banksy gives themself artistic license with this piece of London street art.

You would never come across this tiny green oasis if you didn't know it existed.

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 futuristic, brutalist masterpiece that is also strangely prison-like.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

Cozy basement bar sports an inventory of over 2,000 beers.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

A little sculpture with a large wardrobe.

Notorious artist squat renovated into legal studios.

The eclectic seaside sanctuary caters to a rather fowl crowd.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

Celebrated example of Ottoman architecture that also served as a site for brutal massacres.

Monasteries on rock pillars, once accessible only by frayed ropes.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Where commuters walk through remnants of an ancient Greek necropolis.

This fantastical icy castle is built anew every winter.

The grandest stage for the world's foremost masters of invisible instruments.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

A floating cat sanctuary on an Amsterdam canal.