Bro ... I believe this is the new Melbourne City Council Office. This building is called CH2 (City House 2). I remember it because I did a documentation for Architecture for Peace launch on this building.
It is the greenest and healthiest office space, awarded by UN, and has 6 Green Star Rating (i.e. the highest).
I believe the window flap open, when its doing a night purge (maybe?), letting fresh air in and hot air out by utilizing winds, and all the natural system.
Great shot. It is very interesting how much like benches it looks. Awesome sky! It's an interesting architecture concept but I would not be able to live there because of the mesh type bars over the windows. I'd feel stuck.