San Telmo Fair. 10Tango is leading us along one of the most traditional Sunday pedestrian walks in Buenos Aires: the San Telmo Fair, with its endless offer of antiques, outdoor museum, and street artists. Tango is one of the main features of this walk. Enjoy outdoor performances by guitar players Aníbal Arias, Gustavo Margulies and José Ignacio López, as well as the typical orchestras Imperial and El Afronte