Hohensalzburg Fortress and Old Town, Salzburg

One of the largest medieval castles in Europe, standing above Salzburg's baroque old town, a UNESCO World Heritage Site. Ride the funicular up for the state rooms and views over the city and the Alps.

Below, see Mozart's birthplace on the Getreidegasse, the cathedral, the Residenz, and the Mirabell Gardens, a setting from The Sound of Music. The Salzburg Festival in summer is one of the world's great music festivals. The Salzburg Card covers most sights and transport.