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April 15, 1981 – Permanent
Museum: National Zoo
Location: Olmsted Walk
Today, this exhibition is home to seven western lowland gorillas and six orangutans, which may be seen outside in the yard or inside the Great Ape House. The orangutans have access to the Think Tank by using the aboveground O Line; for details, see Think Tank.
The exhibition was designed to encourage physical activity and normal social interaction within each group. Features include 8 spacious, glass-fronted indoor areas, 2-3 stories high, equipped with floor-to-ceiling climbing structures; large outdoor areas with dry moats confining animals without visual obstructions; and interpretive graphics.