The present cathedral was started by Abbot Simeon (1082-1094) under William I in 1083. Building continued under Simeon's successor, Abbot Richard (1100-1107). The Anglo-Saxon church was demolished, but some of its relics, moved to the cathedral. The main transepts were built early on, crossing the nave below a central tower, and are the oldest surviving part of the cathedral. The West Tower (215 feet) was built between 1174 and 1197 and the Romanesque style of the west front dates to the 12th century, with the later addition of the Galilee porch (1198-1215).