 Macaulay places its construction in North West Wales between 1283 and 1288, when Edward I of England was in fact building a string of castles to help his conquest of that land.Much of the layout and architecture of Aberwyvern castle is extrapolated from these Welsh castles, which Macaulay visited as a boy, and in particular Conwy Castle, which it is directly modeled after.The castle is constructed on a rocky mount jutting out into the River Wyvern.