I must say, seeing this exhibit in person...it's a nice facility for orangs. It's a lot bigger in person and there are many, many signs for getting to know the orangs and orang conservation. They could defiantly use bigger outdoor exhibits and some actually trees. The best part about this exhibit is that Indiana can get pretty cold in the winter and its nice that the red apes get such big indoor exhibits! Overall, it person it's much more grand!
the glass wall appears to be tilted backwards (towards the viewers) which should remove most of the reflective problems when one is standing at the windows. As you say, the people there do not seem to be struggling to see through.
It is a mistake inexperienced exhibit designers often make: assuming that if you angle the glass down you avoid glare. But as soon as the sun lights up the ground in front of the glass you have a problem. That's why such outdoor viewing areas often have shade structures.
Several of us remarked on this problem here months ago when the images of this facade first were posted
