Finding your way
The old town (Innere Stadt, 1st district) is encircled by the Ring, the boulevard laid out where the city walls once stood. Vienna has 23 districts; the Danube flows north-east of the centre.
Getting around
Wiener Linien runs the metro (U-Bahn), trams and buses; trams run along the Ring. Tickets: wienerlinien.at.
Getting there
Vienna International Airport, at Schwechat, is linked to the centre by train. The main station (Wien Hauptbahnhof) serves long-distance lines.
Emergencies
European emergency number: 112.
Further reading
General information, without hours or prices. For details, see Wikivoyage (content under the CC BY-SA 4.0 licence) and official websites.