Hold your child's next party at this historic farmhouse in Prospect Park. From April to autumn, Lefferts hosts weekend birthday celebrations that teach kids about the people who once lived in the beautiful mansion. They'll be able to artake in the games the children of yesteryear loved, such as potato-sack racing. Bring your own food and drink to a celebration here, and follow up cake time with rides on the nearby carousel. Ages 2 and up.