The Los Santos fair Activity · Fuentesaúco, La Guareña, Zamora Image of Fuentesaúco, not of the place itself. The November agricultural fair has been held by royal order since 1776 and remains the main commercial event of La Guareña, in a town that in 1612 received from Felipe III the title of county of la Fuente del Saúco. Photo: Rodelar (CC BY-SA 4.0) What to see and do in Fuentesaúco