Tickets for the local transportation network are valid for all means of transport within Vienna (Zone 100), like underground, tram, bus, and train. They are available at the Vienna Transport Authority’s ticket offices (at main stations of the underground), at ticket vending machines (at all underground stations). Many tickets are also available at tobacconists. Single tickets can be bought at vending machines inside the tram and from bus drivers. Most tickets (except weekly and monthly ticket) have to be stamped in the blue punching boxes before boarding the underground or inside trams and busses to validate them. Further information you can find on www.wienerlinien.at