The Zoo and Botanical Garden have been staffed since 1846. The Moorish Revival style echoing the Alhambra have been maintained and supplemented since 1960. Today, the zoo has an area of about , houses around 11,500 animals from around the world composed of roughly 1,200 species and roughly 6000 plants from all climates. Of Germany's zoos, Wilhelma's collection ranks second to the Berlin Zoological Garden. In addition to the public garden, Wilhelma also has a branch office located in Fellbach, where the zoo keeps its stallions.