We've been visiting Dutch Wonderland for a few years now and the kids still really enjoy it. As they are getting older, they enjoy being able to do rides by themselves and get around more at Duke's Lagoon (water section of the park), including the big tube water slides.
The kids' favorite ride is the Spinning Turtles, although I think I'm getting a little too old to continue riding the turtles. They also enjoy the log ride, train ride, pedal trains, giant fun slide, and the sky ride. Here are a few of my favorite pics from our most recent trip.
If you have young children and have never been to Dutch Wonderland, put it on your list! If you live in the Baltimore area, it's the perfect day trip since it's only about an hour and a half away. We even opted for the season passes this year and have already been at least 5 times this summer. The park is a good size to not be too overwhelming and has lots of different activities to keep kids of all ages happy.
Check out the website for all the details - Dutch Wonderland