in 1875, he founded the westphalian zoo in munster, a preserve with emphasis on european domestic mammals. it had a building for the display, cultivation and breeding of various fowl as well as avaries for songbirds. in 1876 a "monkey house" was constructed. eventually, the zoo expanded to include native fauna in general. by the end of 1882, the site had "niche displays" (dioramas) representing fauna from australia, the north sea coast, german forests, the african landscape, as well as a section that contained fossils from prehistoric westphalia.