Great Sand Dunes National Park and Preserve is 41% larger than Wichita, Kansas.
Area: 606 km2 calculated
Great Sand Dunes National Park and Preserve is a United States National Park located in the San Luis Valley, in the easternmost parts of Alamosa County and Saguache County, Colorado, United States. Wikipedia
Area: 430 km2 calculated
Wichita WICH-ə-taw is the largest city in the U.S. state of Kansas and the 49th-largest city in the United States. Located in south-central Kansas on the Arkansas River, Wichita is the county seat of Sedgwick County and the principal city of the Wichita metropolitan area. Wikipedia