Much of the detailed informational facts are incorrect. Having lived here for 66 years and worked for 39 of those for an historical organization, this irritated me just a tad. Also, the featured locations are biased based on the authors' priorities. Starting points for tours are a bit vague; however, I plan to attempt some of the tours since I've always wanted a schematic for tours of this kind. The concept is actually very nice during this troubled time, where you can go walking on your own or in small groups.