Public hot spring source from where thermal water at 60º flowed from Sant Grau Hill. The water from the hot spring source, also called Santa Cecília, was used by inhabitants for domestic use, given its famous properties. In the mid-19th century, it belonged to the Pla i Deniel family, who was authorised to export it as medicinal water in 1870 under the name “San Narciso.” In 1890, Narcís Pla i Deniel granted part of the waters to the inhabitants, which gave rise to the San Narciso hot spring source. During the 20th century, ownership changed hands on several occasions