Yefremov (town)
Coordinates: 53°9′11.16″N 38°5′40.92″E / 53.1531°N 38.0947°E / 53.1531; 38.0947
Yefremov (Russian: Ефре́мов) is a town and the administrative center of Yefremovsky District of Tula Oblast, Russia, located on the Krasivaya Mecha River (Don's tributary), 149 kilometers (93 mi) south of Tula. Population: 42,350 (2010 Census); 47,256 (2002 Census); 56,740 (1989 Census).
It was founded in 1637 as a fortress defending the southern borders of the Tsardom of Russia. It was granted town status in 1777.
Read more about Yefremov (town): Sister City