Fribourg is the capital of the Swiss canton of Fribourg and district of La Sarine. Located on both sides of the river Saane/Sarine, on the Swis…Fribourg is the capital of the Swiss canton of Fribourg and district of La Sarine. Located on both sides of the river Saane/Sarine, on the Swiss Plateau, it is a major economic, administrative and educational centre on the cultural border between German-speaking and French-speaking Switzerland. Its Old City, one of the best-maintained in Switzerland, sits on a small rocky hill above the valley of the Sarine. In 2018, it had a population of 38,365.