For someone wanting to know the detail of Castle, why they were built, how they were built and their evolutions through the centuries they were used, this is a wonderful treat. Loaded full of pictures to illustrate, he covers the Castle in the 12th century all the way through the coming of the big cannons that made them useless, and beyond to their becoming private family homes. Gives you a list of castles to visit and further reading list. Wonder book for someone wanting to visit Scotland's Castles from their armchair.