Hotel de Inmigrantes, the primary point of entry for millions of immigrants from 1911 to 1953, is also in Retiro and today serves as a national museum. Plaza San Martín Across the street opposite Retiro train terminal is the leafy Plaza San Martín, surrounded by great palaces and hotels. The Retiro lowlands were once the training grounds for General José de San Martín's Regiment of Mounted Grenadiers, and the modern-day Plaza San Martín features an equestrian monument to the hero of the Argentine War of Independence, as well as a memorial to the dead in the Falklands War. The most significant landmark opposite the plaza is the Kavanagh Building, a reinforced concrete structure finished in 1936 that, at the time, was the tallest building in Latin America at . Funded by an Irish Argentine woman, the Kavanagh stands on the northern end of pedestrian Calle Florida, and its construction followed the plaza's extensive redesign, which resulted in the demolition of a number of derelict buildings from the colonial era, though also of the original National Museum of Fine Arts, an ornate pavilion used for the 1889 Paris Exposition. Other architecturally significant landmarks facing the plaza include the Paz Palace, the San Martín Palace, and the Olivetti and Pirelli skyscrapers, which were among the first in the city built in the International Style. References External links Unofficial Retiro guide with pictures and sightseeings Neighbourhoods of Buenos Aires