The history of the Haikko manor dates back to 1362 when a Dominican monastery owned the site. Jöns Olafsson Stenbock bought the manor and Haikko was a residence of Stenbock family for next 400 years. In 1871 it was bought by general Sebastian von Etter. Several members of the Russian Imperial family visited Haikko because von Etter was a close friend to czar Nicholas II. During the revolution in 1917 Grand Duke Kiril´s eldest son Wladimir was born and christened at Haikko. He was the nearest aspirant to the imperial crown of Russia and he became later the head of the Romanov family.
Current main building was built in 1913. The Vuoristo family purchased the manor in 1965. Today Haikko provides conference center, spa and hotel facilities.
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.