I really enjoy the Philadelphia Zoo because of the variety of animals and activities it offers to children of all ages. It is a mid-sized zoo and may not have all the exotic animals, but it has a good variety. There is also a children's zoo in the rear where children could pet the animals and get pony rides. You can also ride horses, camels, and occasionally elephants. There are also swan boats rides requiring pedaling power, as well as the small train for younger ones. If you live in the area, it's definately worthwhile to buy the family membership since you can get unlimited admission and rides at a reasonable price.