The exact building year of Stahleck castle is not known, but it has been proved that the castle was already occupied since the year 1095. It's first mentioned in documents in the year 1135 under Goswin von Hochstadt. Until 1148 almost 10 years of fight followed for the rights of the Stahleck.
In the year 1156, after the death of Hermann of Stahleck, his stepbrother Konrad von Hohenstaufen became count palatine of Bacharach on the Rhine river. The town of Bacharach, which is situated on the castle mountain, became center and residence of the originating palatine territory on the Rhine river. Castle Stahleck, which was originally the most farthest southern situated property of the Cologne bishops, was assigned from the emporer Barbarossa to his brother Konrad in the year 1190.
In the Thirty Years' War, in year 1644, as the Catholic party banished the French out of the town with 250 cavalries and 450 Cologne foot soldiers, these fled into the castle Stahleck. Colonel of Nievernheimb, commander on the fortress Ehrenbreitstein, let the castle Stahleck near Bacharach at the Rhine river thereupon be fired at without occupying it. Th restoration was made in 1666 by the elector count palatine Carl Ludwig.
Between January and May 1689 the Stahleck castle was exploded by the french troops from Ludwig XIV. 237 years it was in a ruins, until the crown prince of Preußen bought the area in 1828. Rhine river society accomplished restoration work in 1909 and 1910.
Starting at the end of 1965 until May 20, 1967, the youth hostel was further constructed on the castle Stahleck. Thereby the in the substructure still original roman Bergfried of the castle Stahleck with abated wall strength was newly roofed and furnished with new walls. Today it expresses the picture of a medieval castle with different construction phases and is one of the most well-known youth hostels.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.