At one time the monkey collection was huge and confined to this building, but these days there is no indoor viewing and only 3 outdoor exhibits (1 large on the right and 2 smaller ones on the left). One of the cages is empty half of the year as the hooded capuchins have a truly great Monkey Island with access to many huge trees, and the rest of Denver's primates are to be found in what I think is the best section of the zoo. The 7-acre Primate Panorama is for the most part superb!