Many people walking on a pedestrian alley in Buenos Aires, Argentina.
Michael S. Lewis/National Geographic Creative

The San Telmo barrio in Buenos Aires was always a walkable and intimate neighborhood that gathered people into cafés and shops on its cobbled streets. Today, its old churches, antique shops, alleys, and artists attract tourists from around the world. It is a street experience opposite of that on Avenue 9 de Julio three blocks away—a noisy gouge through Buenos Aires through which traffic pours and where big retail towers indifferently over the human beings.