Hi,

Why don't you save this trip (4 Days of Family Fun in Philadelphia) as your own then add things to do there based on your family's preferences?  This trip is already geared to families with kids so most of the planning has been done for you!  Always a plus :>) 

Here's an excerpt of the info you'll find from the trip:  The first thing visitors discover about Philadelphia is that it's a walking town. You'll find most places are within a mile of City Hall. Stroll on pleasant, tree-lined streets that display a rich mix of architecture ranging from Colonial to Victorian to Bauhaus, sometimes all presented within the same block.

Enjoy!