North Korea GuideNorth Korea is a country in East Asia occupying the northern half of the Korean Peninsula that lies between Korea Bay and the Sea of Japan. It borders China to the north, Russia to the north east and South Korea to the south. HotelsFind hotels in Yangyang and more. PyongyangP'yŏngyang, with about 2,750,000 inhabitants, is the capital city of North Korea. KumgangsanKumgangsan, literally the Diamond Mountains, is in North Korea. Kumgangsan is the second-tallest mountain in North Korea, its highest peak Pirobong is 1638 meters. PyonganPyongan is one of the historic provinces of Korea, now broken up into North Pyŏngan, South P'yŏngan and the separately administered capital city Pyongyang. Donghae CoastThe Donghae Coast is a region of North Korea stretching along the the entire west coast of the North Korean part of the peninsular. HwanghaeHwanghae is a region of North Korea. Baekdu MountainsBaekdu Mountains is a mountain range in the northern part of North Korea spanning the provinces of Ryanggang and Chagang.