Iron window grills were introduced to Taiwan in the 1920s. This decorative craft creates patterned window grills by welding, forging and bending iron. Today, the art of window grills is almost a thing of the past. Yet in the streets of Tainan, there remain many unique iron window grills. This work utilizes the features of local window grills, combining LED lights, cold light lamps, and iron window grills to establish the connection between the old and the new through variations of light.