Nyenschantz was a Swedish fortress at the confluence of the Neva River and Okhta River, the site of present-day Saint Petersburg, Russia. Nyenschantz was built in 1611 to establish Swedish rule in Ingria, which had been annexed from the Tsardom of Russia during the Time of Troubles. The town of Nyen, which formed around Nyenschantz, became a wealthy trading center and a capital of Swedish Ingria during the 17th century. In 1702, Nyenschantz and Nyen were conquered by Russia during the Great Northern War, and the new Russian capital of Saint Petersburg was established by Peter the Great in their place the following year.

The Neva is a river in northwestern Russia flowing from Lake Ladoga through the western part of Leningrad Oblast to the Neva Bay of the Gulf of Finland. Despite its modest length of 74 kilometres (46 mi), it is the fourth-largest river in Europe in terms of average discharge.