Crossing the widest avenue in the world, Av. 9 de Julio, we will get to Plaza San Martín in the neighborhood of Retiro, one of the most beautiful and diverse parks in Buenos Aires, surrounded by the great aristocratic manors of the former elite, Palacio San Martín and Palacio Paz. We will learn about the South American independence war and our greatest national hero, General San Martín, honored by a beautiful monument in the plaza. There we will get to the panoramic view point of the terrace with a privilege view of the famous Tower of the English. Architectural contrast is characteristic to Buenos Aires, and we will learn about a famous amorous urban myth around the construction of the modern Kavanagh Building and its relationship with the church of the Holy Sacrament. From Plaza San Martín we will walk through streets Arroyo and Alvear, where the local aristocratic families built some of  the poshest and finest residences in the city, witnesses to the great cultural change of Buenos Aires in the beginning of the XXth century. Our walk will finish in Plaza Alvear (a.k.a. Plaza Francia) with the Hispanic colonial church of our lady of the Pilar, surrounded by Café La Biela and the famous Recoleta Cemetery where we will have our last stop.