The Governorate of Estonia, also known as the Esthonia (Estland) Governorate, was a province (guberniya) and one of the Baltic governorates of the Russian Empire. It was located in the northern Estonia with some islands in the West Estonian archipelago, including Hiiumaa and Vormsi. Previously, the Reval Governorate existed during Peter I's reign and was confirmed by the Treaty of Nystad, which ceded territory from Sweden to the newly established Russian Empire. The Estonia Governorate was established in 1796 when Paul I's reforms abolished the Reval Viceroyalty. The port city of Reval was the administrative centre where the governor had his seat.