Special things to do with my 2.5 year old next weekend?

I get to spend all weekend w/ my little girl next week (mommy & baby brother will be out of town). She’s an adventurous, inquisitive 2.5 year old girl. I’d like to plan some special events for the two of us to do together. We’re in Cincinnati, but I’m also looking for general ideas of fun things to do with kids at that age.

Any ideas? I was thinking something along the lines of a petting zoo, hayride, or even one of those build-a-bear places, but could use some more ideas.

Thanks!