The old-fashioned orangutan house in Sapporo Maruyama Zoo was renovated with a concept of “environmental enrichment” in 2008 spring. The concept was stretched for not only the orangutan but also visitors and a zookeeper as well. In the outside field for the orangutan, there are soils, many natural plants, and some play equipments such as ropes, beds, seat swings, and ponds. On the other hand, at the observation area for visitors, they can see the movement and the condition of the orangutan at close range through the full-height glazing. In summer solar shading strategies as Sudare and louvers can provide the cool spots for the orangutan, visitors, and a zookeeper as well.
