Hamilton Zoo, 13 December 2012.
This block of three cages was built around five years ago, and is located at the bottom of the Chimpanzee enclosure (at the back of this photo). The nearest cage holds an elderly pair of Siamang, while the next two each hold a Fishing Cat.
Review of visit here:
http://www.zoochat.com/17/hamilton-zoo-review-2012-a-302384/#post626373