The Cathedral of Saint Mary Major (Portuguese: Santa Maria Maior de Lisboa), often called Lisbon Cathedral or simply the Sé (Sé de Lisboa), is a Roman Catholic cathedral located in Lisbon, Portugal. The oldest church in the city is the seat of the Patriarchate of Lisbon. Built in 1147, the cathedral has survived many earthquakes and has been modified, renovated and restored several times. It is nowadays a mix of different architectural styles. It has been classified as a National Monument since 1910.