The beginning of the Great Northern War: In February, Russian forces led by Peter the Great invaded Sweden, beginning a conflict that would last until 1721.
The construction of the Peter and Paul Fortress: In May, work began on the fortress in Saint Petersburg, which was intended to defend the city against attacks from the Swedish army. The fortress would go on to become a major landmark and a symbol of the city.
The foundation of the city of Saint Petersburg: In May, Peter the Great officially founded the city of Saint Petersburg on the banks of the Neva River. The city would become the new capital of Russia and a major cultural and economic hub.
The Battle of Kalisz: In October, Russian forces fought against the Swedish army at the Battle of Kalisz in Poland. The battle ended in a decisive victory for the Russian army.