Custer State Park may not be a national park yet it has nothing to envy. This 71,000-acre (28,700 hectare) stretch of land is home to craggy peaks and one of America's last grasslands. It boats scenic drives and hiking trails; clear blue lakes and charming lodges. Pronghorn, elk, bighorn sheep, mountain goats, prairie dogs and burros all call this park home. As do 1,500 American buffalo. But what make's this South Dakota state park a great family destination is its proximity to Black Hills attractions. Wind Cave National Park, Jewel Cave National Monument, and Mount Rushmore National Memorial are all within 15 miles.