Château du Plessis-Bourré is a château built in less than 5 years from 1468 to 1472 by Finance Minister Jean Bourré, the principal advisor to King Louis XI. The château has not been modified externally since its construction and still has a fully working drawbridge. It was classified as a Monument historique in 1931.
The château was purchased in 1911 by Henry Vaïsse who, when he died in 1956, bequeathed it to his nephew, François Reille-Soult, Duke of Dalmatie. Thereafter it remained the property of different members of the Reille-soult de Dalmatie family. The château is currently managed by Aymeric d'Anthenaise and Jean-Francois Reille-Soult of Dalmatie and is open to the public. The Château du Plessis-Bourré has been the location setting for numerous films.
References:Bomarsund fortress and garrison was built in 1832-1854 by Russian Empire to defence Åland Islands against enemies. British and French fleet attacked against it during the Crimean War in 1854. After a week of fighting the British stormed the remaining fort. Anglo-French forces destroyed it totally after battle. In the Treaty of Paris 1856, the entire Åland Islands were demilitarized, which is a status that has been preserved until this day.
Nowadays there are some ruins left and fortress area is open for visitors.