Monserrat or Montserrat is a neighbourhood in the east of the Buenos Aires CBD. The district features some of the most important public buildings in Buenos Aires, including city hall, the city legislature, Casa Rosada, the Colegio Nacional de Buenos Aires and the Libertador Building, among others.
Avenida de Mayo runs through the Monserrat district, connecting Plaza de Mayo and the Plaza de los Dos Congresos.
Wikipedia https://en.wikipedia.org/wiki/Monserrat,_Buenos_Aires
Address 1360 Calle Mexico, Ciudad Autónoma de Buenos Aires C1097ABB, Argentina
Coordinates -34°36'57.112" N -58°23'7.912" E