"Decorated Period". English Historians sometimes subdivide this style into two periods, based on the predominant motifs of the designs. The first, the Geometric style, lasted (about 1245 or 50 until 1315 or 1360), where ornament tended to be based on straight lines, cubes and circles, followed by the Curvilinear style (from about 1290 or 1315 until 1350 or 1360) which used gracefully curving lines. Henry III of England was the brother-in-law of Louis IX of France, and he had attended the consecration of Sainte-Chapelle in Paris in 1248. In 1245 he had begun reconstructing portions of Westminster Abbey. After his visit to Paris, he began adding Rayonnant elements. He also ordered the reconstruction of the east end of St. Paul's Cathedral, based upon the model of Sainte Chapelle. Unlike the French Rayonnant, the English version at Westminster was more heavily decorated with carved stonework. The style was soon used in other cathedrals and churches across England. Lincoln Cathedral saw the addition of several important Rayonnant features; the vaulted ceiling of the chapter house (1220); and the Dean's Eye rose window (1237); the Galilee Porch and the Angel Choir (1256–1280). Other notable Rayonnant examples include Exeter Cathedral (begun before 1280); in the Choir of Saint Augustine at Bristol Cathedral; and in the unusual retrochoir of Wells Cathedral. In these structures, the French tracery and decoration was often mixed with typical English decorative features, including colonettes, and added very decorative ribs to the ceiling vaults. In the 14th century, the technique of grisaille was more widely used in English cathedrals, such as the nave windows of York Minster (1300–38). This was monochrome painting in large windows onto the glass, usually grey or white, which allowed more light to enter, and was usually surrounded by smaller panels of stained glass. Central Europe The Rayonnant style gradually spread to the east from Paris and was adapted to local styles. The nave of Strasbourg Cathedral, then in the Holy Roman Empire, was a notable early example. It was begun in 1277, built atop the foundations of an earlier Romanesque church which some deviations from the usual Rayonnant arrangement of arcades, which were separated by bundled columns. The three-part elevation were large windows with lancets and roses along the aisles, more windows above on the narrow Triforium, and dramatic high windows with four lancets surmounted by quadrille windows, filling the church with light. One unusual aspect