Conwy Castle, situated on the Conwy River, on the coast of North Wales, one of the six castles built by Edward I to secure his conquests in Wales, and an important link in this chain. Like the others (Caernarfon Castle and Harlech Castle), it was designed by Edward's architect-engineer, Master James of St George, and built from 1283 onwards. The castle was intended to appear daunting and impressive: it has eight massive towers, each identical in scale and four of them turreted; decorative pinnacled battlements; and a limestone wash.