Perhaps nowhere is the blending of modernity and the tradition of earth building more evident than at the Casa Grande Ruins National Monument. Casa Grande was constructed between ad 1200-1450 by the Native American Hohokam near Phoenix, Arizona. In 1928, Frederick Law Olmsted Jr., son of Frederick Law Olmsted the landscape architect most famous for the earthwork of Central Park in New York City, was acting as an adviser to the National Park Service. The desire by the National Park service was to create a shelter that both protected the ruins, while allowing them to have hierarchical presence. The Olmsted Jr. design was completed on December 12, 1932.