The guided tour was absolutely fantastic. Our tour guide Katie made it so much fun. It starts with a lot of history (and a lot of stairs) and a tour of the tower. You climb up the long winding stairs, waves of fresh air gushing through the opening in the stonework, stopping off at a room on the way up. Reaching the top, you can see across the city from the parapet, the castle flags catching the wind. Coming back down, the stairs are just as steep, snaking around the central tower back to the main castle prison. We continued to follow stairs (there is a lift alternative available at this point) down to the crypt. A passageway leads through to the dark, atmospheric room, the old stonework carved by prisoners and a dark, cold spot lingering in a corner. While we were down there, we caught Merlin teaching some young apprentice magicians in a children's workshop. The tour includes a few cell rooms show casing the prison at different points in time. Here Katie really brought the stories to life, getting caught up in the role and bringing us all along with her to be entertained, shocked and laughing. We explored the main museum, testing out some of the hard labour the prisoners were sentenced too, and reading about the full history of the prison. All in all well worth the money and the souvenir photos were great value for 2+.