Z-plan is a form of castle design common in Scotland and England. The Z-plan castle has a strong central rectangular tower with smaller towers attached at diagonally opposite corners. [1]
Prominent examples of the Z-plan include Brodie Castle in Moray, Castle Menzies in Perthshire, [2] Glenbuchat Castle in Aberdeenshire, [3] Castle Fraser in Aberdeenshire, Claypotts Castle in Dundee [4] and Hatton Castle, Angus, Scotland.