Klammstein Castle near Dorfgastein

Burg Klammstein in Dorfgastein, Austria

On my train journeys through Austria I often pass Klammstein Castle (Burg Klammstein) which seems to block the Gastein Valley (Gasteinertal) in the north. In earlier times it was used as toll station. Today it accommodates a museum about the history of the castle and the valley.