While staying in Conway, we took a day trip over to Caernarfon, another medieval town and castle. In it's heyday, Caernarfon Castle was the apex of military technology--at one point 28 men held it against an attacking force of about 2,000. This is also the site where Prince Charles was invested.
Here's a picture of Jes at Caernarfon. Now in 16 million colors instead of 256.