Salzburg Zoo sits near Hellbrunn, with the rock wall and wooded slopes giving it a more dramatic setting than many city zoos. The layout uses that landscape well, mixing animal enclosures with views that remind you how close Salzburg is to the Alps even when you are still within the urban edge.
It is most useful for families or for travellers spending a relaxed day south of the centre. Combine it with Hellbrunn Palace and its trick fountains, and you have an easy outing that balances Salzburg's music-and-Baroque core with something greener and less formal.