In the primate section of Wuppertal Zoo you’ll find, among others, the Monkey House (Affenhaus). The building for the monkeys reflects the Zoo's past. Originally it stems from 1927 and it was refurbished in 1985. But another upgrade was done in 2006, together with the establishment of a nice outdoor enclosure for the drill (Mandrillus leucophaeus). The enrichment is mostly artificial (ropes, tree trunks), which does not look nice but could cover the need of the animals for sure. Inside the Monkey House all exhibits have the same interior design with tiled walls, coated concrete floors and enrichment features. All have rather low ceilings except for the Dusky leaf monkey (Presbytis obscurus).