Werdenberg Castle is a castle in the municipality of Grabs of the Canton of St. Gallen in Switzerland. It is a Swiss heritage site of national significance.
It was the original seat of the County of Werdenberg in the Holy Roman Empire.
See also List of castles in Switzerland
References
2. Zitiervorschlag Lorenz Hollenstein: "Werdenberg", in: Historisches Lexikon der Schweiz (HLS), Version vom 03.10.2013. Online: https://hls-dhs-dss.ch/de/articles/007646/2013-10-03/, konsultiert am 12.04.2023.