Perched on the Mönchsberg, 120m above the Salzach, the sturdy crenellated towers of the Prince-Archbishops' Castle lean on powerful bastions. Built from 1077 and modified time and again thereafter, the fortress watches over the Old Town and the Alps. Pleasant surprises await you on your tour of the castle, such as the state rooms, which were sumptuously fitted out in the Middle Ages and an interesting museum.