The oldest recorded mention of the place (Feyena) has been dated to 1325. At this time, there was a fortified manor or a castle at the site, the remains of which were reconstructed and expanded in a romantic fashion during the 19th century but are still visible in the manor park.
The present manor house was commissioned by the Baltic German von Stackelberg family and built 1784-1797. It was designed by an anonymous Italian architect in latebaroque style. The wings of the long main house have circular pavilions with preserved decorated vaulted roofs, where formerly the family displayed their art collection, which reputedly held works by Hans Holbein, Nicolas Poussin, Claude Lorrain and Antoine Watteau . The main building also showcases some preserved architectural details, notably two painted ceilings as well as further, albeit later, architectural details.
The most famous resident of the manor house was the archaeologist Otto Magnus von Stackelberg who grew up there. Nowadays the manor houses an elementary school (est. 1855), a public library and a public Internet point of access.
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.