Lar Gibbon Exhibit (Hylobates lar)

This exhibit seems very similar to the 'roundhouse' cages at Los Angeles Zoo. Here's a photo from L.A.:

@snowleopard Indeed, They even go by the same name.
There are four of these "Round houses" dotted in the south-eastern part of the zoo each with two exhibits containing Servals, Caracal, Bat-eared foxes, Lar Gibbons Ring-tailed and Common brown Lemurs.