The only reason 111-sq-mile Custer State Park isn't a national park is that the state grabbed it first. It boasts one of the largest free-roaming bison herds in the world (about 1500), the famous 'begging burros' (donkeys seeking handouts) and more than 200 species of bird. Other wildlife include elk, pronghorns, mountain goats, bighorn sheep, coyotes, prairie dogs, mountain lions and bobcats. There are several thrilling scenic drives.
