Here are some top things to do in Salzburg:

• Visit the Hohensalzburg Fortress, one of Europe's largest intact fortresses, offering stunning views of the city.
• Explore Mozart's Birthplace, a museum dedicated to the famous composer.
• Wander through Mirabell Palace and Mirabellgarten with beautiful gardens and baroque architecture.
• Visit Salzburg Cathedral, known for its Romanesque and Gothic architecture and beautiful stained glass windows.
• Explore St. Peter's Abbey, one of Austria's oldest monasteries with a scenic cemetery and catacombs.
• Discover the Salzburg Museum and DomQuartier, for art, history, and cultural exhibits.
• Enjoy live classical music concerts in the Marble Hall of Schloss Mirabell.
• See the Trick Fountains at Hellbrunn Palace, known for their playful hidden water features.
• Stroll down Getreidegasse, Salzburg's famous shopping street with unique guild signs.
• Visit the Salzburg Open-Air Museum to see historical farmhouses and enjoy train rides.
• Have a drink at Augustiner Bräustübl, a historic brewery with a great beer garden.
• Explore the Haus der Natur, an interactive natural history museum with an aquarium and reptile zoo.
• Enjoy the cozy atmosphere and street performances at Mozartplatz.

These highlights offer a mix of history, culture, architecture, nature, and local experiences that make Salzburg special to visit. Let me know if you'd like details on any specific place or type of activity!