Wander most any street in Portugal, and you’ll see azulejos tiles, those decorative blue tiles on buildings, churches, and homes. At first glance, they seem merely decorative, but a closer look ...

You might find these Portuguese tiles, or azulejos, adorned on buildings during a walk about town (especially in Alfama), in gift shops (or at stalls at the Feira da Ladra), or within the walls of ...