Situated below the Mount Evans Massif, Summit Lake Park is the highest city park in North America and is the highest park in the Denver Mountain Parks system. This area is popular for its impressive scenery, alpine botanical features and wildlife viewing opportunities. In 1965, it was designated the first National Natural Landmark in Colorado, as the area is one of the best examples of Arctic tundra in the contiguous United States. The Summit Lake area provides habitat for a variety of rare alpine-arctic plants, some of which occur only here and above the Arctic Circle. Because of the fragile tundra and rarity of these plants, visitors are asked to stay on the trails when visiting the area and not to walk on the tundra. Forest Service staff and volunteers provide interpretative programs and are available to answer questions. In addition, Colorado Parks and Wildlife volunteers oversee a wildlife viewing station most weekends.