The Wizards Tower is build out of foam board, cardboard, balsa wood, clay and sand.
I used some small plastic items like shields, a door and a wheel to decorate the tower. The banner is made out of a thin sheet of metal, the lamp beside the door is made out af a paperclip and the roof tiles are single cardboard tiles. The round tower is a toilet roll.
The structure of the walls was done by applying a thin coat of wood glue on the walls and throwing sand over it.
Some detail shots of the tower