inside new orangutan exhibit

This is reminiscent of Philadelphia Zoo's fairly new (1999) Primate Complex. All harsh metal, glass and cement.

http://www.zoochat.com/837/primate-reserve-white-handed-gibbon-sumatran-177441/

http://www.zoochat.com/837/primate-reserve-colobus-monkey-exhibit-177444/

This would have been topnotch in the seventies, but 40 years later it is not even near good enough, apart from space that could be available. And that when there are very nice orang utan exhibits in many different countries nowadays.... So it is not that they did not have any examples.