We're going to Cincinnati for a long weekend tomorrow. My husband is doing the Nascar driving experience Saturday afternoon. I was hoping too visit the zoo, the museum center, and maybe the Newport Aquarium. The thing is, they all seem to have the same hours (daytime only). Any suggestions on fun, moderately-priced attractions that might suit our family in the evening hours (5 p.m. and later)? Outdoors are fine, too, but nothing too strenuous for a toddler. We would prefer a unique experience (no Chuck E Cheese, etc.). Our boys are nearly 3, 15, and 10. Thanks in advance for any advice you might have!