I got it for my 2 year old boy's birthday, he has played with it everyday, figured out the stairs, how to lock to car in place and push himself into the ramp. My girls are 4 and 6, and they are enjoying it too. It is safe, only because of its height, either my wife and I will stay close by, I believe it triggers motor skills and engineering skills. I even enjoyed putting it together with him trying to help me.