I really enjoyed everything about Philly!!!! The tour guides were knowledgeable and able to give great recommendations about food and things to see. My only regret is that I wasn't there long enough. Guess that means I'll have to visit again.
There are two buses . Both have a guide that comments..The first tour guide was interested in Sculptures in various Venues. It was so-so. Yet , she made some interesting comments about the Barnes and the Controversy surrounding Moving the Artworks, against the testamentary wishes of Barnes. Museums kind of close early in Philadelphia. In Detroit, I was more lucky DIA open till 10 PM on Thursdays. Philadelphia has a fairly good transit system. I stayed nights in a NJ Suburb and it cost like 12 to get there. If you're alone, it may make sense or if you have a Rental. So the Hop-on Hop off is neat way although in Winter , it didn't tempt me to get off. I did the two full tours so I definetely got my money's worth in Seeing stuff in little time.