I never knew these places existed. It's basically a babyproofed giant playroom where the toddlers can go nuts. Moms often bring their infants and no children over 5 are allowed making it safer for the little tots.
There is a ball pit, moon bounce, slide, castle, and a variety of toys for fun and learning. There is a dining area if you want to bring lunch and they serve some drinks and snacks. It cost $10 admission for the child when I went there, adults are free and you can stay as long as you want.
It's nice to go somewhere like this where you can sit back and relax (for the most part)!