Goju

Koju, later called Kowŏn, lies near the head of Yŏnghŭng Bay in northeastern Korea. Koryŏ established a frontier county here in 973 and renamed it Koju in 995, appointing a defence commissioner. Roads and relay stations connected the district with neighbouring towns along the eastern frontier. Mountains rise behind the coastal lowlands, giving the district a landscape of narrow valleys and cultivable plains.