Diepoldsau in the context of "Austria–Switzerland border"

The border between the modern states of Austria and Switzerland is divided into two parts, separated by the Principality of Liechtenstein, with a total length of 180 km (110 mi). The longer, southern stretch runs across the Grison Alps and the shorter one following mostly the Alpine Rhine (which was straightened), except near Diepoldsau and between Lustenau and Lake Constance, where it follows the Old Rhine bed. The border continues northward to the Austrian-Swiss-German tripoint located within Upper Lake Constance.