The House of Zähringer was a noble family that played a significant role in the history of Switzerland and Germany during the Middle Ages. Founded in the 11th century, the family is known for establishing several cities, including Bern and Freiburg im Breisgau. Their influence helped shape the political landscape of the region. The Zähringer family was closely associated with the Holy Roman Empire and held various titles, including dukes and counts. Their legacy includes the promotion of trade and urban development, which contributed to the growth of the regions they governed. The family eventually became extinct in the 13th century.