Karatsu (唐津市; -shi) is a city located in Saga Prefecture on the island of Kyūshū, Japan. Its name, formed by the kanji "kara" (China), and "tsu" (port), signifies its historical importance as a link between Japan and China. As of May 1, 2005, the city had an estimated population of 132,330 and a population density of 271 persons per km² (...)