“The Neal Smith National Wildlife Refuge is a federal national wildlife refuge located in Jasper County, Iowa, United States. The refuge, formerly known as Walnut Creek, is named after Congressman Neal Edward Smith, who championed its creation.” Wikipedia

Having travelled to Prairie City several times to try to see the bison and elk I can attest to the fact that you find them close to the road on about 1 in three trips. Today I was not only able to see the bison close up, but the elk were there also.