Fredensreich Hundertwasser had a vision for people to live in interesting houses in order to lead interesting lives. His architectural vision lives on in this building which has a unique café, print shop, exhibition space and details about his life and works. The apartments can only be viewed from the outside. Open daily 10am-7pm, admission €8 and all exhibitions are half price on a Monday. HAUS DER MUSIK - Ub Stephansplatz
If the Statsoper and Volkstheater are fully booked this may be a fun alternative as you get to be the audience, performer and the conductor. The Haus der Musik is a new attraction combining art and technology over five floors, from the Philharmonic museum rooms to the Sonosphere examining sound with large instruments, to the Virtual conductor where you get to lead the Vienna Philharmonic Orchestra. The café on the top floor gives you a chance to contemplate your next symphony while over looking St Stephans Cathedral. Open 10am-10pm daily, admission €8.50, Vienna Philharmonic Museum €5 or combined ticket €10.