Plot: Fred Dibnah is on a mission to uncover and explain the construction skills that went into the building of Britain, and in this episode he travels to Scotland to demonstrate the engineering and design skills that shaped Scottish baronial style. At Glamis Castle, Fred demonstrates how a simple sandstone tower house was transformed 400 years ago into a great house with more than a passing resemblance to a fairy-tale castle, with the help of stonemasons from Aberdeen and plasterers from Italy