Austria
It's Salzburg's answer to the Tower of London. There are no crown jewels but there are great views over Salzburg and there's a nice museum. It's on a crag above the Old Town and can be reached by a funicular railway near the Domplatz, or by paths (much cheaper, although steep).
The funicular station is near the Domplatz (there are signs to it). You can get a map from the Tourist Office in Mozartplatz. I don't really know where the paths begin from, but they are near the mountain's base.
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