4. Park Slope Armory YMCA
Location: 361 15th Street
One of the best things about indoor play spaces is that regardless of the weather, your child can still have an enjoyable time playing. Park Slope Armory YMCA, the number 4 on our list of indoor play spaces and kiddie gyms in Brooklyn, is one of the best play spaces because they are offering different kinds of activities for children depending on their age. They have different classes and play spaces for a great price. Here, every child can find the toy or activity they are interested in and can play with it all day.