On Sundays, you must lose yourself in the vibrant rhythm of the San Telmo Fair, a sprawling outdoor market that's a true local tradition. As you wander down the cobblestone streets, you'll discover a treasure trove of handmade crafts, unique antiques, and vintage finds, all set to the lively soundtrack of street performers. It's the perfect place to soak up the city's creative energy and find a one-of-a-kind souvenir.