thumb|right|Front of Former National Congress Building, Santiago
The Former National Congress Building (ex Congreso Nacional) is the former home of the Chilean Congress. Congress met in this building in central Santiago until Salvador Allende's socialist government was overthrown by Augusto Pinochet's military coup d'état on September 11, 1973. that contain a variety of exotic trees and plant life. The eastern portion of the gardens was the former site of the Church of the Company.
thumb|right|Former Congress Chamber
The building has a cross within a square plan, which creates four courtyards. It also features classical pedimented porticos with Corinthian columns on the north and east facades. The building and its gardens occupy a complete city block, which is adjacent to city blocks containing other nationally significant buildings such as the Santiago Metropolitan Cathedral, the Palacio de los Tribunales de Justicia de Santiago and the building that currently houses the Museo Chileno de Arte Precolombino.
The building is open to the public on a limited basis.