Soon to be demolished for the construction of the new orangutan house and outdoor exhibits. The gibbons will return in the new house according to current plans.
@DelacoursLangur The outdoor island is pretty nice, but the indoor exhibit is too small and is also lacking in structure and poorly furnished. So that could definitely do with an upgrade.
I am sure the gibbons will be getting at least as decent an island in the new project. As of yet it isn't clear whether they will be combined with the orang-utans or not.