 Flying Giant Adventure Park opens daily at 11. So if you're ready for a jumping, gliding, climbing good time, stop in. Make sure you bring a buddy or two or three along for the fun. When it's steaming hot outside, Flying Giant Adventure Park is climate controlled. Plan a special occasion with some friends. And after all the fun activities, enjoy a fountain drink and a piece of Helena's best pizza. From young toddlers to adults, everyone has a blast at Helena's Entertainment Center. Flying Giant Adventure Park, now open at 11.