Fasching (Carnaval) held the first 2 weeks of February. Not the typical street parade type but the more sedate indoor masquerade ball version.
Wiener Festwochen held mid May to Mid June. Loads of theatre, music and dance productions held all around the city and performed by world artists.
Ball season begins New Years eve and runs all the way through to June. Various balls include the Imperial (Kaiserball) Blumenball (flower ball) and Kaffeesiderball (coffee ball)
Donauinsel Fest put on by the social Democrats, fireworks, rock and jazz concerts.
Jazzfest Wien is in the first weeks of July attracting loads of famous acts.