The world's oldest bookshop still in operation.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

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

This 19th-century fountain's namesake animal isn't what you think it is.

Giant topiary dog once played a role in a terrorist bomb plot.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

The famous artist couple lived and worked here, in two different houses separated by a bridge.

In Coyoacán, a pair of coyotes crown a public fountain in reference to the ancient Aztec name of the borough.

Abandoned figurines adorn a small plot on the side of a craft market's entrance.

The unique collection often goes unnoticed by visitors focused only on the archaeological objects.

The only castle in North America to ever house European sovereigns.

Some charming, but sadly, unloved animal statues call this park home.

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

A Volkswagen Beetle decorated with millions of beads connects Mexico's past and future.

An airy Art Deco space devoted to the weird and wonderful folk art traditions of Mexico.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

These spectacular, symbolic serpents lie within the shadow of the Great Temple.

This Byzantine Church was moved from Paris to Athens block by block.

This Ottoman-era church is hidden amid a busy tourist area.

A man's head is enshrined beneath a statue near the first building constructed for the modern Olympic Games.

The historic building has preserved human organs, unusual hexagrams, and scars from a political assassination.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

A quirky bookstore hidden beneath a sea of whitewashed Greek villas.