En un regard
Le château en bref
Frohberg is the site of a vanished castle, on a wooded spur of the Irchel overlooking the village of Dättlikon, in the canton of Zurich. No masonry survives: only two ditches, one of them a neck ditch, and a circular depression interpreted as a cistern are visible, on a platform measuring about 25 × 12 m. The written sources never refer to the structure directly, and its identification rests on evidence drawn from landholding records. In the fourteenth century it is said to have served as the residence of the lords of Hasle, servants of the Habsburgs, who had abandoned their earlier seat at Niederhasli before 1325, were patrons of the church of Dättlikon, and from 1370 held the neighbouring advocacy of Pfungen. Certain properties at Frohberg remained owed to the convent of Töss until the sixteenth century, a further indication of an earlier castle. Only the chroniclers Heinrich Brennwald (1516) and Johannes Stumpf (1548) mention the fortification. The wooded site is freely accessible.