I went on the 10am tour and it took a couple of minutes for the guide Tim to hit is stride but when he did he was funny, informative and clearly knew his stuff. It is also his own company! I have been on a few different tours where people are listing the facts they have learned but Tim clearly likes his history and has picked up a lovely range of facts, stories and oddities throughout the old city. The first half was a general tour but the last focused on a range of stories on the weird and wonderful things Ben Franklin got up to in the area. Well priced and not too long it gives a nice snapshot of the old town.