Custer State Park topped a new ranking thanks to its wildlife, scenic drives, and outdoor adventures.The annual Buffalo Roundup at Custer State Park in South Dakota.Credit: Lauren Breedlove/Travel + LeisureNational parks often get all the love and rank high on travelers’ bucket lists, but there are plenty of state parks filled with hikes, waterfalls, mountains, lakes, coastlines, and forests that are just as worthy of planning a trip for.That's …