The Shlisselburg Fortress or Oreshek Fortress () is one of a series of fortifications built in Oreshek (now known as Shlisselburg) on Orekhovy Island in Lake Ladoga, near the present-day city of Saint Petersburg, Russia. The first fortress was built in 1323. It was the scene of many conflicts between Russia and Sweden and changed hands between the two empires. During World War II, it was heavily damaged. Today it is part of the UNESCO World Heritage site Historic Centre of Saint Petersburg and Related Groups of Monuments.
Origins
A wooden fortress named Oreshek () or Orekhov () was built by Grand Prince Yury of Moscow (in his capacity as Prince of Novgorod) on behalf of the Novgorod Republic in 1323. It guarded the northern approaches to Novgorod and access to the Baltic Sea. The fortress is situated on Orekhovets Island whose name refers to nuts in Swedish as well as in Finnish (Pähkinäsaari, "Nut Island") and Russian languages.
After a series of conflicts, a peace treaty was signed at Oreshek on August 12, 1323 between Sweden and Grand Prince Yury and the Novgorod Republic. This was the first agreement on the border between Eastern and Western Christianity running through present-day Finland. A modern stone monument to the north of the Church of St. John in the fortress commemorates the treaty. In 1333 Novgorodians invited Lithuanian prince Narimantas to govern their north-western domain. Narimantas appointed his son, Alexander Narimuntovich to rule the autonomous Principality of Oreshek.
In 1348 king Magnus Eriksson attacked and briefly took the fortress during his crusade in the region in 1348–1352. It was largely ruined by the time the Novgorodians retook the fortress in 1351. The fortress was rebuilt in stone in 1352, by Archbishop Vasily Kalika of Novgorod (1330–1352), who, according to the Novgorod First Chronicle, was sent by the Novgorodians after several Russian and Lithuanian princes ignored the city's pleas to help them rebuild and defend the fort. The remnants of the walls of 1352 were excavated in 1969, and can be seen just north of the Church of St. John in the center of the present fortress.
Expansion
In 1478, the Novgorod Republic was absorbed by the Muscovy who immediately started to strengthen their border with Sweden. The existing small citadel was demolished and a new stone fortress with seven towers was constructed, which occupied almost the complete island. The old Novgorodian basement was used to construct a new citadel with three towers inside the outer walls. The total length of the walls was about 740 meters. Their height up to 12 meters, and the width at the basement 4.5 meters; The towers were 14–16 meters high and 16 meters in diameter at the basement. This made it the strongest Russian fortress of that period. The residents were forced to resettle on the mainland and most preferred the Southern bank of Neva for safety reasons.
In 1554–1555, during the Russo-Swedish War, The Swedes laid siege to the fortress, with no success. In response, russians besieged Vyborg, with no success either.
During the Livonian War in 1582, Swedish troops led by Pontus De La Gardie almost captured the fortress. After a row of artillery fire they managed to break into one of the towers, but were later repelled by russians.
The fort was captured by Sweden in 1611 during the Ingrian War after nine months of siege, when the defenders lost every 9 men of 10. As part of the Swedish Empire, the fortress was known as Nöteborg ("Nut-fortress") in Swedish or Pähkinälinna in Finnish, and became the center of the north-Ingrian Nöteborg county (slottslän). During that time very little was done to maintain the fortress in good order, and the experts coming to Nöteborg to do inspections warned the crown of its deterioration.
During the Ingrian campaign of tsar Alexei Mikhailovich in June 1656 the fortress came under a siege by voevoda Potyomkin, known as the Battle of Nöteborg, which lasted until November 1656 with no success.
Great Northern War
In 1702, during the Great Northern War, the fortress was taken by Russians under Peter the Great in an amphibious assault: 440 Swedish soldiers defended the fort for ten days before surrendering. After heavy artillery fire and 13 hours of fighting inside the fortress, the Swedish commandant finally agreed to capitulate on honorable conditions. The Swedes left the fortress with their flags, rifles and four cannons. The Russian forces numbered 12,500 men and sustained a total of 1,500 casualties, compared to 360 for the Swedes.{ see Siege of Nöteborg (1702)}.