Yes, Vienna is a highly walkable city, especially in its historic city center. Many of the city's top attractions, including St. Stephen's Cathedral, Hofburg Palace, and the Vienna State Opera, are within walking distance of each other. The streets are well-maintained, and there are pedestrian zones, making it easy and enjoyable to explore the city on foot. However, Vienna also has an efficient public transportation system, including trams, buses, and the subway, which can be used to reach destinations that are farther from the city center.