The formidable looking Chepstow Castle dates from 1067 - building began less than a year after William the Conqueror became king. It was constructed in stone from the very start - not wood, as was the case with many Norman castles, in a strategic position overlooking an established crossing point over the River Wye. Building continued through its life right up to the 17th century. It was besieged twice during the English Civil War, eventually falling to Parliamentary troops. By the 18th century, Chepstow Castle was in a state of decay and becoming a tourist attraction.