The University of Tartu (Estonian: Tartu Ülikool, Latin: Universitas Tartuensis) is a classical university in the city of Tartu, Estonia. University of Tartu is the national university of Estonia; it is the biggest and highest-ranked university in Estonia. The University of Tartu is a member of the Coimbra Group and the Utrecht Network, and was established by King Gustavus Adolphus of Sweden in 1632, thus being one of the oldest universities in Northern Europe. The Academia Gustaviana in the then Swedish province of Livonia was the second university founded in the Swedish Empire, following Uppsala University (in Uppsala, Sweden proper) and preceding the Academy of Åbo (in Turku, Finland). A precursor to the academy had been a Jesuit grammar school Gymnasium Dorpatense, founded by Stefan Batory (then king of Poland) in 1583 and existing to 1601, when Tartu (Dorpat) was under Polish rule. The first students immatriculated between 20–21 April 1632. The opening ceremony of Academia Dorpatensis (Academia Gustaviana) took place on 15 October in the same year.