This waterpark may be a slight hike from the city (about 60 minutes northwest of O'Hare) but it's worth the trek. This water mecca has rides for the thrill seekers as well as for the faint of heart. Your little ones will love the little lagoon, a giant wading pool with fun water activities as well as Tiki Island, an interactive playspace with four water slides, spray features and a 1,000-gallon bucket that dumps out water without warning. Plenty of food is available to make this a full-day adventure. Insider tip: Tuesdays, Wednesdays and Thursdays this summer are $12 bargain days.