There are lots of hands-on exhibits here for your children to enjoy! It is fun and educational! There is a great observation tower that you can enjoy as well. And the best part....it is free!! If you don't mind spending some money, there is a HUGE movie screen there...but it is definitely worth stopping with or without the movie!
This should definitely be a high priority if you're in northwest PA! The buidling is gorgeous (a green facility), the exhibits are so educational and interesting, and the quality of the presentation is top-notch. You won't be disappointed!
School-aged kids will enjoy this the most, but there's still some stuff for preschoolers to enjoy too. The observation tower is really cool (a good workout to get up the stairs, but there's also an elevator), and you can see for miles and miles across Lake Erie.
There's also an I-Max equilivant theater on site and they show really awesome, educational movies. Check their website for showings and specials.