8 Mile Corner is a monument in the Cimarron National Grassland dedicated to the tri-point (a place where three states meet) of Kansas, Colorado, and Oklahoma. This point is also the meeting point for three distinct regions of America – the Western United States (Colorado), the Midwestern United States (Kansas), and the Southern United States (Oklahoma). The landmark was a windmill with the three states' abbreviated names on the blades. The windmill monument was built in 1903. * OK-KS-CO Tripoint - Windmill marker * OK-KS-CO Tripoint - Road marker - Actual tripoint *