Vienna rewards a slow visit more than almost any other European capital — this is a city built for coffeehouse mornings, long walks along the Ringstrasse, and evenings that drift from a concert to a glass of wine without much planning. Three days is enough to take in one grand sight each day while leaving plenty of room to just wander.
Give the morning to Schönbrunn Palace, the Habsburgs former summer residence, and take your time in its gardens rather than rushing straight back into town. Come afternoon, ease back toward the center with a coffee stop before a gentle look at the Hofburg Imperial Palace, once the seat of the empire and now home to several smaller museums worth a peek rather than a full tour. As the light softens, stroll down Kärntner Strasse, Vienna's grand shopping street, letting the shop windows and street performers set the pace toward the old town.
Spend the morning at one museum rather than several — the Kunsthistorisches Museum is the obvious anchor, with its vast collection of Old Masters housed in a building nearly as impressive as the art itself, though the Leopold Museum or Albertina are equally good choices if modern art or works on paper appeal more. Afterward, find a table at one of the traditional coffeehouses nearby for a slow lunch and people-watching. In the afternoon, walk a stretch of the Ringstrasse, the grand boulevard that circles the old city, taking in the facades of the Rathaus and the Parliament Building without needing to go inside either. If music appeals, the Haus der Musik is a relaxed way to close the day before dinner.
Start at St. Stephen's Cathedral, the heart of the old town, then let yourself get lost in the surrounding lanes — the quiet square of Am Hof and the elegant Graben are made for aimless wandering and window shopping rather than a checklist. Duck into Peterskirche along the way if its doors are open; its baroque interior is a nice surprise for such a small church. In the afternoon, head to Belvedere Palace, whose gardens and views back toward the city make it worth lingering over rather than rushing through. If there is time before evening, the domed Karlskirche makes for a peaceful last stop, especially with a coffee afterward in one of the cafes nearby.