"Plaza Dorrego lies in San Telmo, the bohemian artists' quarter and the birthplace of tango. The tiny square is surrounded by elegant houses, now mostly converted into antique shops and bars whose tables overflow onto the street. On Sundays the plaza is the setting for the ancient antique market, the Feria de San Pedro Telmo. Though you are unlikely to discover any bargains you may find an interesting souvenir or two. The stallholders pack up their wares at 5pm and the square becomes the setting for informal tango dances. This is as popular with the locals as tourists and even the inexperienced may be tempted to try it out. There are numerous museums nearby the plaza worth visiting, including the Museo Historico Nacional and the Museo de Arte Moderno".