Scottish Baronial style drew upon the buildings of the Scottish Renaissance. The style of elite residences built by barons in Scotland developed under the influence of French architecture and the architecture of the County of Flanders in the 16th century and was abandoned by about 1660. The style kept many of the features of the high-rising medieval Gothic castles and introduced Renaissance features. The high and relatively thin-walled medieval fortifications had been made obsolete by gunpowder weapons but were associated with chivalry and landed nobility. High roofs, towers and turrets were kept for status reasons. Renaissance elements were introduced. This concerned mainly the windows that became bigger, had straight lintels or round bows and typically lacked mullions. The style drew on tower houses and peel towers, retaining many of their external features. French Renaissance also kept the steep roofs of medieval castles as can be seen for example at Azay-le-Rideau (1518), and the original Scottish Baronial style might have been influenced by French masons brought to Scotland to work on royal palaces.