Frauenfeld Castle is a castle in the municipality of Frauenfeld of the Canton of Thurgau in Switzerland. It is a Swiss heritage site of national significance.
Wikipedia https://en.wikipedia.org/wiki/Frauenfeld_Castle
Address 2 Rathausplatz, Frauenfeld 8500, Switzerland
Coordinates 47°33'18.723" N 8°53'48.736" E