Eisenberg Castle is a medieval hilltop castle ruin north of Pfronten. Eisenburg Castle was built in 1313, when the nobles of Hohenegg, deriving from the West of the Allgau, were deprived by force of their castle, Loch, by the Tyrolean. In consequence, they moved a few miles further north to establish their new lordship of Eisenberg which centered round a new castle. To visualize their power towards Tyrol/Austria, which held the closely sited castle of Falkenstein, Peter of Hohenegg decided to build Eisenberg in a most impressive manner: he placed it on top of a high mountain and surrounded the main castle with an exceedingly high curtain wall which gave the impression of a huge tower. The two residential houses together with the kitchen and chapel leaned against the inside of the curtain wall. The ground to the south of the main castle was covered by the outer castle, with access to the main castle from the east; later to be walled up, but still visible.
In 1382 the nobles of Hohenegg sold their castle to Austria, which by then was a more reliable partner than anybody else around. In 1390 Austria made Frederic of Freyberg constable of the castle whose eldest son built the neighbouring castle of Hohenfreyberg in 1418-32. Though the defences of the castle were strengthened around 1500, the castle was conquered without any effort in 1525 in the course of the German Peasants' War by local peasants who damaged the castle badly.
Nevertheless the castle was rebuilt ten years later in a sumptuous way by Werner Volker of Freyberg after receiving high compensation payments from the peasants. He improved the living luxury immensely by erecting a new stair tower and adding a bakery, a bath and several mured toilets to the curtain wall. Also the main castle got a new main gate towards the west.
The end of the castle came on the 15 September 1646, shortly before the end of the Thirty Years' War, when the Austrians burnt their own castles of Eisenberg, Freyberg and Falkenstein in a policy of scorched earth. in the 1980s the 'Burgenverein Eisenberg' and the community of Eisenberg restored the fabric and established a small museum in the center of Zell.References:
Ängsö Castle was first named as "Engsev" in a royal charter by king Canute I of Sweden (r. 1167-1196), in which he stated that he had inherited the property after his father Eric IX of Sweden. Until 1272, it was owned by the Riseberga Abbey, and then taken over by Gregers Birgersson.
From 1475 until 1710, it was owned by the Sparre family. The current castle was built as a fortress by riksråd Bengt Fadersson Sparre in the 1480s. In 1522, Ängsö Castle was taken after a siege by king Gustav Vasa, since its owner, Fadersson's son Knut Bengtsson, sided with Christian II of Denmark. However, in 1538 it was given by the king to Bengtsson's daughter Hillevi Knutsdotter, who was married to Arvid Trolle.
In 1710, the castle was taken over by Carl Piper and Christina Piper. Ängsö Castle was owned by the Piper family from 1710 until 1971, and is now owned by the Westmanna foundation. The castle building itself was made into a museum in 1959 and was made a listed building in 1965. It is currently opened to visitors during the summers.
The castle is a cubical building in four stores made by stone and bricks. The lower parts is preserved from the middle ages. It was redecorated and expanded in the 1630s. The 4th storey as well as the roof is from the expansion of Carl Hårleman from 1740-41. It gained its current appearance in the 1740s.