North Korea occupies the northern portion of the Korean Peninsula, lying between latitudes 37° and 43°N, and longitudes 124° and 131°E. It covers an area of 120,540 square kilometres (46,541 sq mi). North Korea shares land borders with People's Republic of China and Russia to the north, and borders South Korea along the Korean Demilitarized Zone. To its west are the Yellow Sea and Korea Bay, and to its east lies Japan across the Sea of Japan (East Sea of Korea). The highest point in North Korea is Paektu-san Mountain at 2,744 metres (9,003 ft). The longest river is the Amnok River which flows for 790 kilometres (491 mi). The capital and largest city is Pyongyang; other major cities include Kaesong in the south, Sinuiju in the northwest, Wonsan and Hamhung in the east and Chongjin in the northeast.