Founded in 1579, Vilnius University is the oldest university in the Baltic states and one of the oldest and most famous in Eastern Europe. Counting nearly 20.000 students, it is the largest university in Lithuania. Due to its history, its wide-ranging university ensemble represents all major architectural styles that predominated in Lithuania: Gothic, Renaissance, Baroque and Classicism. Vilnius University appears in the most prestigious world universities rankings, such as the ones made by ARWU, CWTS, QS, Times Higher Education and USNWR. The institution has signed more than 180 bilateral cooperation agreements with universities in 41 countries and is a member of several associations, like: the International Association of Universities, European University Association, the Conference of Baltic University Rectors, the Utrecht Network, UNICA Network, and the Baltic Sea Region University Network.