Planet Word is a super fun and interactive museum for all ages! It has games and photo opps and karaoke and all sorts of fascinating and engaging stuff. And for a bonus you can grab food downstairs at either Immigrant Food or Atrium Cafe and then eat in Franklin park across the street! They even have a little playground, fountain, plenty of greens spaces, and actually nice public restrooms easily accessible. Plus you're right next to the McPherson Square metro or plenty of buslines if you wanted to travel around the city some more.