Conwy Castle was called one of the best Middle Ages military places in Europe by UNESCO. It is a World Heritage Site. The castle is rectangular. It is made from local stone and stone brought from other places. There are two parts of the castle: "Inner Ward" and "Outer Ward". It has eight towers and two barbicans. There is a gate which has a path that goes down to River Conwy. This path let the castle get supplies from boats and fishing. It has one of the oldest machicolation's in the country. It also has a bedroom which was used by kings and queens. The castle was based on the buildings made by James of Saint George.