Oreshek Fortress
The Oreshek Fortress (Russian: Крепость Орешек; Schlüsselburg Fortress, Russian: Шлиссельбургская крепость) is one of a series of fortifications built in Oreshek (now known as Shlisselburg) on Orekhovy Island in Lake Ladoga, near the modern city of Saint Petersburg in Russia. The first fortress was built in 1323.