PFEFFERS, or PFÄFFERS (Fr. Favère), a village of Switzerland, in the canton of St Gall, stands in the wild valley of the Tamina, 31 miles E. of St Gall. It is chiefly remarkable for its hot baths, which are situated in a deep, narrow chasm, through which the Tamina forces its way. The mineral water, which has a temperature of about 100° Fahr., is used both for bathing and drinking, and has great reputation, though it contains but a small proportion of saline particles. The baths are capable of accommodating 200 or 300 patients at a time. Pfeffers was the seat of a Benedictine abbey, which was founded in 713, but suppressed in 1838; and the buildings are now used as a lunatic asylum. Pop. 1315.