When I was in BA, I was seeing these lovely Easter bunnies all over the city. In BA, there are lot of good panaderias (bakery shops). They sell fabulous breads, cakes, chocolates etc.
This is famous Congreso Nacional. The Congressional Palace is located in Buenos Aires, at the western end of Avenida de Mayo (at the other end of which is located the Casa Rosada). The Kilometre Zero for all Argentine National Highways is marked on a milestone at the Congressional Plaza, next to the building.