Beaumaris Castle, located in Beaumaris[?], Anglesey, was built as part of Edward I's campaign in North Wales[?]. Begun in 1295, it was designed by James of St George. It was designed using a concentric plan, with its inner ward completely surrounded by an outer ward. For various reasons, the castle was never fully completed.
... much smaller radar cross-section than earlier fighters.
It is also capable of sustained supersonic cruise without using afterburners - the only fighter other than the F-22 ...