A.K.
I saw one other response with Pump it Up, but I would highly recommend it! http://www.pumpitupparty.com/
My nieces and nephews have had several birthday parties there. It's great for kids of all ages. My son is 2 and had an absolute blast, but most of the kids were 5-9 years old and they loved it too. We will definitely be having my son's birthday parties there as he gets a little older!