Westallgäu is the western part of the Allgäu in Germany. It contains large parts of the districts of Lindau in the south west of the region, Swabia in Bavaria and the district of Ravensburg in the south east of Baden-Württemberg. Westallgäu extends to the north to, amongst others, the towns of Leutkirch, Wangen and Isny. Westallgäu is bordered by Oberallgäu to the east and the Austrian state (Land) of Vorarlberg to the south. To the southwest, Westallgäu borders Lake Constance through the town of Lindau. The Adelegg mountains located in Westallgäu represent foothills of the Alps, reaching an altitude of 1,118 m at the Schwarzer Grat ("Black Ridge").