Replacing the playroom window cages with chimp-proof glass has really paid off. Removing the caging from in front of the windows lets much more light into the playroom and gives the chimpanzees an unobstructed view of the world beyond the sanctuary. Negra, in particular, really seems to appreciate this. There is nothing she loves more than gazing over the valley (well, she might love peanuts more).
This is approximately the view that Negra is enjoying in the above photo.