Hollywood & fortress Hohenwerfen
You will be surprised, but also Hollywood loves this area and the medieval fortress of Hohenwerfen was used as background and movie locations for several films. Perhaps you know some of them:
In the 1968 cinema film Where Eagles Dare the castle featured as the fictional Schloss Adler, command headquarters of the 3rd Rich, raided by an Anglo-American paratroop team during World War 2.
Also Just Married with Ashton Kutscher was done there in 2003, where it was used as French Hotel.
Season three of Angel used the castle as a monastery located in Sri Lanka, where Buffy summers died.
Perhaps you remember The 10th Kingdom? Also there the castle appears in the movie.
And of course it was used during the “do-re-mi-picnic scene” in The Sound of Music. Behind Julie Andrews when the kids learned to sing with here you see the valley of Werfen and the hillside with the castle.
There were also a few other movies, I do not want to count them all.