Tula Kremlin is a fortress in Tula, in the central area of European part of Russia. Monument of the 16th century. There are 2 Cathedrals inside the Kremlin: Assumption Cathedral Epiphany Cathedral
Wikipedia https://en.wikipedia.org/wiki/Tula_Kremlin
Coordinates 54°11'42.274" N 37°37'13.405" E
