The Patriarchal Cathedral of St. Mary Major (Portuguese: Santa Maria Maior de Lisboa or Sé de Lisboa) or simply Lisbon Cathedral is a Roman Catholic Cathedral located in Lisbon, Portugal. The oldest church in the city is the see of the Archdiocese of Lisbon. Since the beginning of the construction of the cathedral, in the year 1147, the building has been modified several times and survived many earthquakes. It is nowadays a mix of different architectural styles.