Could you all give advice as to what are good cities to visit with four teenagers, ages, 17, 16, 14, and 14. We are meeting another family around July 4th holiday and we live in minneapolis and they live in St. Louis. We want to meet somewhere with about the same driving distance for both of us. The kids don't have alot in common with each other so we need activities that everyone would like and would get them talking and involved in. Help!