Here are the walls of the first tower, which I've just finished cutting out. No floors yet! I've got to decide whether to make the top separate, so I can put figures inside, or make it solid, and then use cardboard 'floor-plans' on a side table to represent the inner rooms - which requires a modicum of mental gymnastics when playing the game, but avoids the need to lift floors off, with the concomitant risk of dropping figures on the floor. The other advantage of a 'solid' tower is that there's no joint between floors to hide.