On my train journeys through Austria, I often pass Klammstein Castle (Burg Klammstein) which used to block the Gastein Valley (Gasteinertal) in the north. At that time it was meant as toll station for the traffic passing the valley. Today it houses a museum about the history of the castle and the valley.
Interesting detail: Next to the tunnel for cars depicted above there is also a separate tunnel for cyclists and walkers only.
Sources / More info
- Burg Klammstein (Website)
- Castles in Salzburg (Directory)
Disclosure: This trip was supported by 50plus Hotels Österreich and Hotel Klammstein