Maryino is a district of South-Eastern Administrative Okrug of the federal city of Moscow, Russia. Its area is 11.917 square kilometres. Population: 252,597; 247,479; 206,388. It is the most populated district of Moscow.
Wikipedia https://en.wikipedia.org/wiki/Maryino_District
Coordinates 55°39'9.102" N 37°44'40.412" E