The scene for the flashback to when Edward was transformed was filmed in Portland, Oregon.  It was done at the Yale Union Building. The first floor of this building has the windows that are behind Edwards bed. The windows are all very distinctive. There is a definite elongated shape to the window panes. The window panes are joined down the center with molding then there is a ledge that runs across the bottoms of these windows to connect them.  This building was also used for the exterior of the Ballet Studio. The architecture of this building is just amazing.