Freiburg im Breisgau is a city in Baden-Württemberg, Germany with a population of about 230,000 people. In the south-west of the country, it straddles the Dreisam river, at the foot of the Schlossberg. Historically, the city has acted as the hub of the Breisgau region on the western edge of the Black Forest in the Upper Rhine Plain. One of the famous old German university towns, and archiepiscopal seat, Freiburg was incorporated in the early twelfth century and developed into a major commercial, intellectual, and ecclesiastical center of the upper Rhine region. The city is known for its medieval university and minster, as well as for its high standard of living and advanced environmental practices. The city is situated in the heart of a major wine-growing region and serves as the primary tourist entry point to the scenic beauty of the Black Forest. According to meteorological statistics, the city is the sunniest and warmest in Germany and holds the German temperature record of 40.2 °C (104.4 °F).