 An important monument of the square is the Batalha Palace, a good example of a late 18th-century urban palace of Porto.The main façade, in a style intermediate between baroque and neoclassical, carries the coat-of-arms of the former owners (Silvas, Guedes, Melos e Pereiras).During the Siege of Porto (1832) the owners left the building and it was used for several purposes, including blood hospital.