From 18 May till the end of September hundreds of skating enthusiasts meet every Friday at 22.00 at the Heldenplatz for a night-skating event on the streets of Vienna. Traffic is redirected for the duration of the event, which covers a different route each week, while mega-sound systems provide a party atmosphere. Participation is free and registration is not required. The event will be cancelled in the event of rain. More info on the event website (in German)

General Info