Tallgrass Prairie National Preserve is a United States National Preserve located in the Flint Hills region of Kansas north of Strong City. The preserve protects a nationally significant example of the once vast tallgrass prairie ecosystem. In 2010 the United States Mint began issuing 56 quarter-dollar coins featuring designs depicting national parks and other national sites as part of the United States Mint America the Beautiful Quarters Program. 2020 marks the eleventh year of the program and features the next five quarters.