Did you know that if you are a family member of the Charles River YMCA (and potentially other Boston Area YMCAs thru the Metro Membership Program) that you have access to the Kids Gym at the Active Family Center in Needham? They just did some renovations and the Kids Gym is a bright, cheery, fun place to run around - especially when it is hot or cold outside! They have areas for many ages up to about 8. Lots of climbing structures, slides, tunnels and more. They even have a kids bathroom dedicated to the Kids Gym. Very convenient and fun. You have access to the Kids Gym as a Family Member during select hours during the week and weekends.  Call for specific hours, more info on membership and the Metro Membership program. The Kids Gym is located in the YMCA Active Family Center at  380 Chestnut Street (781-449-6646).