After the Siege of Lisbon, in 1147, the monarchs of Portugal had used the Palace of Alcáçova, in the São Jorge Castle, as their residence while in Lisbon, which did not become Portugal's definite capital until 1225. Over the years, various Portuguese monarchs added to the Palace of Alcáçova, and by the time King Manuel I of Portugal succeeded the throne, the Palace of Alcáçova was a large, but cramped, complex, not fitting with the tastes of King Manuel I. With his lucrative profits from Portugal's monopoly on the spice trade, King Manuel I set off on a building spree, renovating the Lisbon landscape, and starting with the construction of a new royal palace.