Istanbul Province Istanbul Province Istanbul Province (), also the Istanbul Metropolitan Municipality ("İstanbul Büyükşehir Belediyesi") is a province of Turkey. It has an area of and is located in the Marmara region in the north-west of the country, bordered by Tekirdağ Province to the west and Kocaeli Province to the east. The Bosphorus Strait between the Black Sea to the north and the Sea of Marmara to the south divides Istanbul Province into European and Asian sides, which makes it one of only two transcontinental provinces in Turkey, along with Çanakkale Province. Istanbul Province has a population of 14,804,116 as of 2016,
Strait of Tartary (1832–54). On Russian maps, the short narrowest section of the strait (south of the mouth of the Amur) is called Nevelskoy Strait, after Admiral Gennady Nevelskoy, who explored the area in 1848; the body of water north of there, into which the Amur River flows, is the Amur Liman; and the name of "Strait of Tartary" is reserved for the largest section of the body of water, south of Nevelskoy Strait. The Tartar Strait was a puzzle to European explorers since, when approached from the south, it becomes increasingly shallow and looks like the head of a bay. In 1787