No building in the world leans as far as the so-called “Leaning Tower of Abu Dhabi.”

The cluster of igloo-like domes forms the remains of an ancient burial ground.

On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.

Architectural monsters are devouring this palace's every door and window.

An alchemist's “magic door” stands in the middle of a Roman park.

A bookstore dedicated to the intersection of comedy and art.

Barça football fans might see the insignia hidden in a church window as a divine sign.

This colorful statue welcomes visitors to a Barcelona park.

On the wall of this medieval walkway, a symbol of the Spanish Inquisition.

An early 20th-century bullring converted into a modern shopping center.

A once-secret library of Freemason history in Catalonia.

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

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

Turntable anonymously received orphans, alms, and groceries.

This cafe offers a curated collection of treats and tipples made by monks and nuns.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

This cemetery features modernist statues as strange as its name.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.

This banal Parisian entranceway is not what it seems.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

Brussels' favorite peeing boy has a sister.