Ugh, such a disappointment.
Part of it was not the book's fault. What I'm really looking for is a history of the structure itself, and this is more a history of England as it relates to the Tower. The problem is that there was loads of minutiae about various reigns but a strange lack of detail about the Tower. Like, here are the thousand million things that this king did, oh and at some point they built another curtain wall, and also there was a palace in there for a minute, now more about the totally unrelated crap! He also mentions several times that the Garden Tower was later renamed the Bloody Tower, with no explanation of when or of what incident prompted that, despite a fairly detailed recounting of the murder of the two princes. There were tons of examples like this and it was maddening.
Also, the writing, while serviceable, is not great, and I found several weird errors throughout the book that could easily have been prevented with slightly better research. For example, Katherine of Aragon is described as having dark hair, which a lot of people assume she did since she was Spanish, but a quick glance at any of her portraits will tell you that her hair was red. Also, even I know that Edward IV's mistress was Elizabeth Shore, not Jane. Come on, man.
The other issue was the shorter chapters after the main history. Jones spends a lot of time on miniscule details that are only tangentially related to the tower, and only mentions in passing that a German spy was executed there in the '40s. You'd think that incident would warrant more than two sentences. I also would have appreciated much more detail about the ghosts of the Tower, since that place is apparently haunted af, and less about Samuel Pepys hitting on showgirls.
Overall, a very disappointing read and not particularly recommended.