I like it. (Eee, gads he's quoting Holywood History lessons!!!) The Normans, (...and I'm sure others too but they didn't have a movie about it with Charlton Heston as the lead actor so those losers can go get stuffed) used to make tall towers a little like this that held enough men and supplies to keep the Saxons in line.
See, there is a Norman Tower and Charlton. I think the tower is way off in the distance, I'm sure it's not to scale... maybe Charlton's some sort of Godzilla Norman, Iunno.