The main open-air center is located within the Ragunan Zoo. Entry to it is different from the zoo fees. It is a special center for various types of animals (primates), as it includes many species such as elephants that move freely within the zoo, orangutans, chimpanzees, gorillas, and others, as well as It contains a lot of places to sit and rest, located in the heart of the picturesque nature, which provides the opportunity for visitors to easily see the animals.