Château de Bizy was built first in 1675 by Michel-André Jubert de Bouville and reconstructed in 1740 by Coutant d'Ivry. He redesigned the castle in a classical style inspired by Versailles. Bizy has had notable owners, including Louis XV, the Duke of Penthièvre and Louis-Philippe. In the castle, the rooms are decorated with beautiful Regency woodwork and house mementoes from the Bonaparte family, as well as from marshals Suchet, Masséna and Davout. The visitor should not miss the Gobelin tapestries in extraordinary colours and a marquetry pedestal table presented by Napoleon I. The English style park, planted with large trees several centuries old, offers opportunities for lovely strolls around fountains, ponds and statues from the 18th century.
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.