A kilometre east of the N621 stands the fascinating little Iglesia de Santa María de Lebeña , built in the 9th or 10th century. The horseshoe arches in the church are a telltale sign of its Mozarabic style – rarely seen this far north in Spain. The floral motifs on the columns are Visigothic, while below the main retablo (altarpiece) stands a Celtic stone engraving. They say the yew tree outside (recently reduced to a sad stump) was planted 1000 years ago.