The Paul H. Douglas Center for Environmental Education is a hands-on nature center in Gary and the western gateway to Miller Woods. Inside, you’ll find exhibits, a room with live animals from the park, nature crafts and ranger programs; outside, the Nature Play Zone lets kids dig, climb and build with natural materials. It’s an easy way to give the dunes some context, especially for families. The center is a small educational stop, though, not a big museum—pair it with a walk if you want a fuller visit.