Contributing structures are: Caretakers Cottage (1889); Lincoln Parkway Bridge (1900), designed by Green and Wicks; Rose Garden Pergola (1912); Stone Bridge (ca. 1887), the only remaining structure from the original Olmsted plan; Parkside Lodge (1914); Rumsey Shelter House (1900); Main Zoo Building (1935-1940); Shelter House (ca. 1900); and Elephant House (ca. 1912). Located north of the park are the Parkside East Historic District and Parkside West Historic District and to the south are the Elmwood Historic District–East and Elmwood Historic District–West, all listed on the National Register of Historic Places.