I forgot about these again. I will finish, even if it takes me years! (I've been at it for two years already so far!)
Vienna has an over-abundance of museums. Museums of all kinds, both old and new. One of the most photogenic has to be the Leopold Museum.
The Leopold Museum has a wonderful collection of modern austrian art, and the most impressive Egon Schiele collection you could want to see. It's a contemporary museum that follows the "white box" philosophy, yet it's so much more that your average white box. The play of shapes, of openings and reflections make walking through it quite an experience. This is how art should be exhibited!