With its high profile green roof and other sustainable design features, St. Louis Zoo’s new Orthwein Animal Nutrition Center serves as one of the first non-animal exhibits in the zoo’s history.

The St. Louis Zoo has made its new animal nutrition center, typically a back-of-house facility at most zoos, a major component of its public exhibit. In addition, the zoo’s new Orthwein Animal Nutrition Center (OANC) educates and informs visitors not only of the importance of plant material and nutrition for animals and animal conservation, but also serves as a high profile showcase for sustainable design.