At one time prairie grass blanketed a 400,000-square-mile swath of North America, stretching from the Rocky Mountains to east of the Mississippi River, and from Texas north to Saskatchewan. An 11,000-acre portion of this original grassland survives at the Tallgrass Prairie National Preserve (see attraction listing). Limestone just beneath the sod helped build Strong City's economy as well as countless public and private buildings throughout the west. Learn More...