Barcelona is astonishing—we’re just giving you a heads-up. A true city of contrasts, it is fleeting yet constant, Mediterranean and cosmopolitan, noisy and full of quiet places where you can be alone with your thoughts. A city that invites metaphor through its sights, where your powers of observation can rival the most legendary flâneurs. Whatever brings you here, walking without a map to see where your feet take you is highly recommended—just as Vivian Maier did with her camera through the streets of New York. Getting lost in Barcelona is just the first step.