enlarged the choir, restored damaged windows, constructed new choir stalls, and installed a new stone choir screen, new altars, and new bronze doors for the west portal. In 1914 war interrupted the work. In 1918, at the end of the First World War, Lorraine and the cathedral were returned to France. The forty-four new choir stalls, made in Colmar in 1914, were finally installed 1922. Between the First and Second World Wars, little funding was available to restore or improve the cathedral; the only significant addition was a new bishop's chair, installed in 1932. However, after the Second World War, chief architect Robert Renaud began a campaign to restore and renew the art. He had a copy made and installed of the angel-musician statue which had decorated the roof–it had been blown down in a storm in 1952. In 1965, a stained glass window of David and Bathsheba, designed by Marc Chagall was installed in Bay 9, along with windows by other contemporary artists. Until 1960 all the furnishings of the cathedral were either original Gothic or recreations of Gothic. That year the cathedral began to acquire modern works of furniture and art, including windows designed by Marc Chagall, Jacques Villon and other artists. In 1999 another wind storm broke loose a pinnacle from the roof, which fell through the roof of the sacristy, requiring major work. The west rose window also showed signs of weakness, due to the absence of a supporting buttress on the west, and began to crack. It was reinforced with two steel supports between 1995 and 2000. The La Mutte tower was restored beginning in 2009, including the restoration of the bells and their mechanism. Timeline of construction 984 – c. 1040 Construction of an Ottonian basilica over an ancient shrine dedicated to Saint Stephen c. 1180 – 1207 Construction of a chapel in Early Gothic style on the west side of the basilica 1220 Beginning of the construction of the Gothic cathedral within the foundations of the Ottonian basilica, construction of the aisles 1265–1285 Construction of the triforia and the two bell towers 1285 – c. 1290 Elevation of the westwork within the foundations of a Gothic chapel from the 12th century 1290s Construction of the vaults of the nave and the supporting flying buttresses c. 1300–1330s Construction of the Lady Chapel 1380 Junction between the former Gothic chapel and the nave 1384 Creation