Elspode, it was free-standing... but don't be too impressed... with the software I used, you can click the same point on each side, and the software will adjust the cropping so that any alignment errors are negated.
99, it is a fun place for kids. I think they say ages 2-7 or 2-8. Their web site (which I don't think much of as a web site), is at
http://www.pleasetouchmuseum.org. My kids could (and have) spent the entire visit in the kid-sized grocery store. The Franklin Institute science museum is right across the street, and the Academy of Natural Sciences is close by too. If you'd rather mix in the zoo or the Liberty Bell/Independence Hall area, those two are not so close, but I think SEPTA has a bus that runs around through all of the attractions that you can buy a day pass for.