Alt-Schauenburg is a ruined castle in the commune of Frenkendorf, Switzerland. It is located near the border of France and Germany, and little of the...

Trochtelfingen Ruine Alt-Ehrenfels (Ehrenfels), Hayingen Altenburg, Reutlingen-Altenburg Burg Alt-Lichtenstein (Alter Lichtenstein), Lichtenstein-Honau Burg Alt-Hayingen...

because of geological events. There were two Schauenburg castles near Frenkendorf, Alt (or Old)-Schauenburg about 1 km (0.62 mi) southwest of the village...