The Bluff Lake Nature Center occupies 123 acres adjacent to Sand Creek on the eastern edge of the old Stapleton Airport property. It offers a variety of native habitats including a seasonal lake, wetlands, short-grass prairie, a riparian zone and forest. Thanks to its 60 year history as an airport buffer, Bluff Lake has become an urban wildlife refuge for waterfowl, shorebirds, raptors, songbirds, deer, fox, reptiles, amphibians and other types of wildlife that visit or live at the site. More about Bluff Lake Nature Center.