The Tallgrass Prairie Preserve is located 17 miles from Pawhuska Oklahoma's historic downtown. The preserve has 37,000 acres of the only protected ecosystem of it's type in the world. More then 1,800 bison roam freely on the plains. The preserve is a open range, it has no fences between you and the bison. One place you want to stay in your car like the signs warn. It's a very special place to see.