High Quality Content by WIKIPEDIA articles! Eglinton Castle was a large Gothic castellated mansion in Kilwinning, North Ayrshire, Scotland. The ancient seat of the Earls of Eglinton, it is located just south of the town of Kilwinning. Built between 1797 and 1802 in Gothic castellated style dominated by a central 100-foot large round keep and four 70-foot outer towers, it was second only to Culzean Castle in appearance and grandeur. The foundation stone of the new Eglinton Castle in Kilwinning was laid in 1797, the 12th Earl of Eglinton, was proud to have the ceremony performed by Alexander Hamilton of Grange, grandfather of the American Hero Alexander Hamilton.