Castle Stalker is a four-storey tower house or keep set on a tidal islet on Loch Laich. The island castle's picturesque appearance, with its bewitching island setting against a dramatic backdrop of mountains, has made it a favourite subject for postcards and calendars, and something of a cliché image of Scottish Highland scenery. Castle Stalker is entirely authentic; it is one of the best-preserved medieval tower-houses surviving in western Scotland.
The original castle was a small fort, built around 1320 by Clan MacDougall who were then Lords of Lorn. Around 1388 the Stewarts took over the Lordship of Lorn, and it is believed that they built the castle in its present form around the 1440s. The Stewart's relative King James IV of Scotland visited the castle, and a drunken bet around 1620 resulted in the castle passing to Clan Campbell. After changing hands between these clans a couple of times the Campbells finally abandoned the castle in about 1840, when it lost its roof. In 1908 the castle was bought by Charles Stewart of Achara, who carried out basic conservation work. In 1965 Lt. Col. D. R. Stewart Allward acquired the castle and over about ten years fully restored it. Castle Stalker remains in private ownership and is open to the public at selected times during the summer.
While most castle scenes in the movie Monty Python and the Holy Grail (1975) were filmed in and around Doune Castle, Castle Stalker appears in the final scene as 'The Castle of Aaaaarrrrrrggghhh'.
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.