Best family vacation spots: Louisville, Bowling Green, and Lexington. Best places for family vacation fun: Six Flags Kentucky Kingdom, Newport Aquarium, Louisville Zoo, Abraham Lincoln Birthplace, Mammoth Cave National Park, Cumberland Gap National Historic Park, Hardin Planetarium, and GunTown Mountain. Things to do with kids: visit Space Voyager Planetarium or tour Hensley Settlement; listen to toe-tapping mountain music or take a cave tour. Go family camping. (Image from Lake Lake Cumberland woodlands.)