Peter the Great
While the Poles fought the Swedes, Peter founded the city of Saint Petersburg in 1703, in Ingermanland (a province of the Swedish Empire that he had captured). It was named after his patron saint Saint Peter. He forbade the building of stone edifices outside Saint Petersburg, which he intended to become Russia's capital, so that all stonemasons could participate in the construction of the new city. Between 1713 and 1728 and in 1732–1918, Saint Petersburg was the capital of imperial Russia.
Leningrad Oblast
During the Great Northern War (1700–1721) the territory of what is now Leningrad Oblast was returned from Sweden by Russia under Peter the Great, who founded Saint Petersburg amidst the land in 1703, which soon became the capital of the Russian Empire. In 1708, most of the territory was organized into Ingermanland Governorate under Governor General Alexander Menshikov. It was renamed Saint Petersburg Governorate in 1710 (the borders of that governorate, however, differed very significantly from those of the present-day oblast and included much of the areas of current Novgorod, Pskov, and Vologda Oblasts). In 1721, the territorial concessions of Sweden were confirmed with the Treaty of Nystad.