Shlisselburg

Shlisselburg is a town in Kirovsky District of Leningrad Oblast, Russia, located at the head of the Neva River on Lake Ladoga, 35 kilometers east of St. Petersburg. From 1944 to 1992, it was known as Petrokrepost. Population: 13,170; 12,401; 12,589. The fortress and the town center are UNESCO World Heritage Sites.