<P> The most significant change in design came in the mid 13th century , when the transepts were remodeled in the latest Rayonnant style ; in the late 1240s Jean de Chelles added a gabled portal to the north transept topped off by a spectacular rose window . Shortly afterwards ( from 1258 ) Pierre de Montreuil executed a similar scheme on the southern transept . Both these transept portals were richly embellished with sculpture ; the south portal features scenes from the lives of St Stephen and of various local saints , while the north portal featured the infancy of Christ and the story of Theophilus in the tympanum , with a highly influential statue of the Virgin and Child in the trumeau . </P>
what was the famous window called in the notre dame cathedral in paris france
rose window