Leixões (Porto), Portugal
Porto is Portugal’s second city, and it's as colorful as it is memorable. Detail is key here, a place where the front doors are decorated with such a stunning variety of azulejo tiles that only by getting up close can you fully appreciate their intricacy. Explore on foot to unveil all the stunning scenery of Porto… like the Ribeira quarter, whose cobblestone-street scenery definitely falls a bit more on the "deliciously old-school" side. Be sure not to miss the city's port wine cellars — as you may have guessed, the city's most famous export took its name from the place itself.