You are now entering the Monserrat District (also spelled Montserrat). Many important government buildings are located in this old neighborhood. Among them is the Buenos Aires Customs House. The French Renaissance design – featuring twin turrets and Carrara marble cladding – is magnificent. The Aduana was built in 1910 when the port was flourishing with foreign trade. In the early 20th century, customs revenue generated over three-fourths of the country’s revenue. In front is a monument to Juan Domingo Perón. During the mid-20th century, this former Argentine Army general was Secretary of Labor, Minister of War, the country’s vice president and Argentina’s president for three terms.