This set of exhibits opened in 1983, replacing several baboon and ape exhibits. This set of exhibits still exists, and was renovated and rebranded Absolutely Apes several years ago. The exhibits include an indoor monkey house with two exhibits, two orangutan exhibits, two siamang island exhibits, a medium walkthrough aviary, and renovation of a large walkthrough aviary. I believe the original inhabitants in the monkey house were silvered leaf monkeys and douc langurs, and the orangutans were Bornean in one enclosure and Sumatrans in the other.