 On October 1, 2007 the towns of Higashiyoka, Kawasoe, and Kubota (all from Saga District) were also incorporated into Saga, further expanding its borders.Although Saga is the capital of Saga Prefecture, it can also be said to be within the Greater Fukuoka metropolitan area, and by extension, Fukuoka-Kitakyushu Metropolitan Area.Standing out from many cultural assets is the plains castle within the city, Saga Castle.