Be at the fortress when it opens. This is the single most useful decision of the trip. The Festungsbahn funicular climbs from the Festungsgasse behind the cathedral and typically starts running around half past eight in the summer months and closer to nine in winter. Expect to pay somewhere around EUR 15 for the return ride with basic fortress admission, and roughly four euros more for the all-inclusive ticket that adds the Princes' Rooms. You can also walk up in about twenty minutes on the path beside the track and pay only for entry. In that first hour the courtyards are close to empty and the low light falls across the roofs below; by late morning the same ramparts are three deep in people.
Give the fortress ninety minutes, then leave on foot rather than by funicular. A path runs west along the top of the Moenchsberg, through woods and past benches set into clearings, with the old town dropping away on one side. It takes thirty to forty minutes to reach the Museum der Moderne at the far end, and you will meet a fraction of the crowd you just left. From there the Moenchsberg lift drops you back to Anton-Neumayr-Platz in about thirty seconds through the inside of the rock.
Lunch without ceremony. The Bosna - two thin grilled sausages with onion, parsley and a curried spice mix folded into a fried roll - is a Salzburg invention, and the version at Balkan Grill Walter, hidden in a passage off the Getreidegasse, has been sold there since 1950. It is typically open from late morning to early evening and costs only a few euros. The Gruenmarkt on Universitaetsplatz, a couple of minutes away, is the other cheap option on weekday and Saturday mornings.
Spend the early afternoon indoors at the DomQuartier, which strings together the Residenz state rooms, a walkway over Residenzplatz, the cathedral organ loft and the abbey museum into a single circuit. It is closed on Tuesdays for most of the year and typically opens mid-morning; expect to pay around EUR 12 to EUR 15, currently at the lower end because the Residenzgalerie is shut for works until autumn 2027. Allow at least two hours and do not plan day one for a Tuesday.
End at ground level. St Peter's cemetery, ten minutes from the cathedral, is a walled garden of wrought-iron grave markers with catacombs cut into the cliff behind it. From there, walk north along the base of the Moenchsberg into the Muelln district and finish at the Augustiner Braeustuebl, a brewery tavern run on the grounds of an Augustinian monastery since 1621, where you take a stone mug from the shelf, rinse it yourself in the marble fountain and have it filled straight from a wooden barrel. Doors typically open in the middle of the afternoon on weekdays and a little earlier at weekends, and it serves until around eleven. Food is bought separately from a row of stalls inside, so arrive hungry; the brewery says its garden seats roughly 1,400.
Start in the Mirabell gardens, which cost nothing, open early, and are emptiest before the first tour groups reach the steps. The Mozart Residence on Makartplatz is a minute from the gate - the apartment the family moved to in 1773, and generally calmer than the more famous birthplace on the Getreidegasse. Pick one of the two rather than both; if you want the birthplace, be there at opening or not at all.
Breakfast at Cafe Bazar, on the river bank a short walk downstream. It has been a coffee house since 1909, opens early most mornings, and its terrace looks straight across the water at the fortress. Order coffee the Austrian way and sit for an hour; that is the point of the room.
Then walk into the Steingasse, a dim canyon of a lane running behind the right bank, and climb from it up the Kapuzinerberg. The stepped path passes the Capuchin monastery and reaches the Hettwer Bastei, a small platform on the old town wall with a bench, in about twenty minutes of honest effort. It gives you the fortress, the river and the whole old town roofline in one frame. Carrying on along the Stefan-Zweig-Weg to the Franziskischloessl, a small 17th-century bastion now used as a tavern, makes a round trip of two to three hours.
The afternoon is where you choose. If the weather is warm and the season is right, take bus 25 south to Hellbrunn, about twenty minutes out. The trick fountains there are a 17th-century archbishop's practical joke - hidden jets in the stone dining table, in the grotto floor, in the path - and the season usually runs from late March to the start of November. The tour is guided, lasts under an hour, and you will get wet. The gazebo from The Sound of Music stands in the grounds. If it is cold or raining, the Salzburg Museum in the Neue Residenz covers the city's history properly, and the Museum der Moderne is there if you skipped it on day one.
For the evening, the Steinterrasse on the roof of the Hotel Stein, right at the Staatsbruecke, was named rooftop bar of the year for 2024 by the Austrian guide Falstaff; reserve, because the terrace is small. For dinner, Zum Fidelen Affen serves solid Austrian cooking on evenings from Monday to Saturday in a room that fills fast. St Peter Stiftskulinarium, inside the abbey walls, traces its own history to a mention in a letter of 803 and is where to order the Salzburger Nockerl, a baked sweet soufflé shaped like three snowy peaks and sized for two people. M32, beside the Museum der Moderne, trades on a glass wall over the whole city.