Riom Castle is a castle in the village of Riom-Parsonz of the Canton of Graubünden in Switzerland. It is a Swiss heritage site of national significance.
Wikipedia https://en.wikipedia.org/wiki/Riom_Castle
Address 7 Dinvei, Riom 7463, Switzerland
Coordinates 46°36'33.318" N 9°35'3.488" E
