If your family loves thrill rides, you are spoiled for choice. Hershey Park offers massive roller coasters, a water park, and a zoo. For younger kids, Sesame Place in Bucks County is an ideal, manageable theme park. Families on a budget should flock to Knoebels in central PA, which is America's largest free-admission amusement park (you only pay for the rides you go on). Beyond the parks, Philadelphia is highly engaging for kids. The Franklin Institute offers massive, hands-on science exhibits, the Philadelphia Zoo was the first in the nation, and the interactive historical sites make learning about the American Revolution genuinely fun, rather than feeling like a history lecture.