Hagenwil Castle

Hagenwil Castle is a castle in the municipality of Amriswil of the Canton of Thurgau in Switzerland. It is a Swiss heritage site of national significance. It is the only remaining intact water castle in eastern Switzerland.
The first mention of the castle is in 1264 when Rudolf von Hagenwil donated it to the Abbey of St. Gall. The donation was made in gratitude to the Abbot of St. Gall for rescuing Rudolf from his sons in law, who were holding him prisoner at Heitnau Castle in an attempt to receive their inheritance early. The donation included the right for Rudolf and his family to continue occupying the castle. After his son Ulrich died childless, the title to the castle transferred fully to the Abbey. The next time the castle is mentioned, in 1341, it was the fief of Hermann von Breitenlandenberg.

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