A few weeks ago, my mom and I took Sweet Pea to the Children's Museum. It was SO much fun that we decided to get a membership. Since then, Mister and I have taken her several times. I'm itching to go back.
This place is great for children of all ages. They have a pretend grocery store, a water table room, a digging room with little rubber rocks. Face painting, clay work, a giant light and bright, plus so much more! It's all very hands on.
Sweet Pea's favorites are the water tables, and the outside area, which has sand and a water fountain thing, that you can play in. We always bring a change of clothes for her, because she always ends up soaked.
I highly recommend it for anyone with kids. Find one in your area.