Things to do in Cincinnati OH

[MVH1]

Planning a summer trip to the Creation Museum and Ark Encounter and thinking of making a day trip to Cincinnati. We are staying at Big Bone Lick State Park. We have 3 elementary age kids. I Understand their is a river walk but not sure how nice it is. Any suggestions is appreciated

[is_it_friday_ye]

Probably a little far for you (about 1 1/2 hrs.) but the air museum in Dayton Ohio is great. And it's free.