Location: 3998 Mid Rivers Mall Dr, St. Peters MO 63376
This place has an amazing 3 story indoor playground, the largest I've ever seen! Now just to be clear you can't just walk in here and play, but they do birthday parties for REALLY cheap. We went to one there today which was $85 for 2 hours and you can bring anything in you like.
It's a huge room with lots of little kid sized tables for eating and lots of seating for the adults. It's a great space for a party!
Big slide on the left