I often pass Klammstein Castle (Burg Klammstein) on my train journeys through the Gastein Valley (Gasteinertal). In earlier times, this fortification blocked the valley in the north.
At that time, it served as a toll station for the traffic passing the Gasteinertal. Today, it houses a museum about the castle’s history and the valley. By the way, you will find a tunnel for cyclists and walkers only inside the depicted hill.
Sources / More info
- Burg Klammstein (Website)
Disclosure: This trip was supported by 50plus Hotels Österreich and Hotel Klammstein