The church of San Andrés Apóstol de Olmo Monument · Vallesa de la Guareña, La Guareña, Zamora Image of Vallesa de la Guareña, not of the place itself. The church of Olmo de la Guareña, a hamlet of the municipality, is declared a bien de interés cultural; in the head village stands the church of San Juan Bautista and over the river the so-called old bridge. Photo: David Perez (CC BY 4.0) What to see and do in Vallesa de la Guareña