Châteaugiron developed around its château from the 13th century onwards, becoming more prosperous towards the end of the Middle Ages as the canvas sail industry expanded. The town’s unique historic town centre is very well-preserved and features significant remains of the medieval fortress, renovated between 1450 and 1470 by Jean de Derval. Of the six original towers, four are still standing: the 38 metre high 13th-15th century keep, built independently of the château, the 14th-15th century clock tower, a belfry during the French Ancien Regime, and the 15th century watchtower and Cardinal’s tower, whose elevated patrol paths with machicolation projections has been preserved.References:
The eight towns in south-eastern Sicily, including Ragusa, were all rebuilt after 1693 on or beside towns existing at the time of the earthquake which took place in that year. They represent a considerable collective undertaking, successfully carried out at a high level of architectural and artistic achievement. Keeping within the late Baroque style of the day, they also depict distinctive innovations in town planning and urban building. Together with seven other cities in the Val di Noto, it is part of a UNESCO World Heritage Site.
In 1693 Ragusa was devastated by a huge earthquake, which killed some 5,000 inhabitants. Following this catastrophe the city was largely rebuilt, and many Baroque buildings from this time remain in the city. Most of the population moved to a new settlement in the former district of Patro, calling this new municipality 'Ragusa Superiore' (Upper Ragusa) and the ancient city 'Ragusa Inferiore' (Lower Ragusa). The two cities remained separated until 1926, when they were fused together to become a provincial capital in 1927.