Bad Ragaz is a municipality in the Wahlkreis (constituency) of Sarganserland in the canton of St. Gallen in Switzerland. It is the home of a famous natural spring and is a popular spa and health resort destination. One of the largest spa hotels is the Grand Hotel Quellenhof. The municipality is in the Sarganserland WahlkreisBez. Sargans. The spa and recreation village is in the south-east of the canton at the end of the Tamina valley. It lies on the north-south and east-west routes over the Graubünden Alps. Until 1937 Bad Ragaz was known as Ragaz.