The ruffed lemur house with the adjacent vulturine guineafowl enclosure.
This particular indoor housing is very old and houses three species: 2 cages for Black-and-white ruffed lemurs, 4 cages for Red ruffed lemurs, and 2 cages for Alaotran Bamboo Lemurs. The concept is basically, when the animals are "locked up" they should be able to choose whether to be indoor or outdoor, 24/7.