sentences:  At Amiens, the windows of the nave were made larger, and an additional row of clear glass windows (the "claire-voie") flooded the interior with light.The new structural technologies allowed the enlargement of the transepts and the choirs at the east end of the cathedrals, creating the space for a ring of well-lit chapels.The next period of French Gothic architecture, from the second half of the 13th century until the 1370s, was termed "Rayonnant" ("Radiant"), describing the tendency toward the use of more and more stained glass and less masonry in the design of the structure, until the walls seemed entirely made of glass.