Tartu is the second largest city in Estonia (population approx. 91,000). Tartu is 168 kilometers southeast of Tallinn Tallinn, the largest city and capital of Estonia (population 440 000). . Tartu is also known as “the city of knowledge” as it is home to the Nation's oldest university, the University of Tartu University of Tartu - Tartu Ülikool is an Estonian higher education institute. . The town is packed with culture, sculptures, and beautiful architecture. Tartu city lies on the shore of the river Emajõgi The second largest river in Estonia with a length of 100 km. .