This is a joke, right?

How about movies shot in Salzburg? Let's try Salzburg first, if we can't reach 10 with that city, we'll do Austria?
- The Sound of Music

2- The Salzburg Connection. Part of it was actually filmed there, I think...
Or was it Vienna?
Start to dig "Mozart"!
- Where Eagles Dare (I had to look up the English title).
The movie was shot in rural Salzburg; the town of S. is the capital of the eponymous province.
That's a nice topic, orangutan, but I'm not sure we can make it to ten, however, I know several more movies that are at least partly shot in Salzburg.
It's pretty easy once one starts digging those old UfA-movies like
- Der kleine Grenzverkehr (1943, based on the novel by Erich Kästner)
oh, my grandma adored Willy Fritsch ;-)