The church of San Millán Monument · Oncala, Tierras Altas, Soria Declared a monument in 1983, it guards the tapestries and presides over a village that also preserves a fronton built in 1890 and still in use, and a stone bridge raised at the end of the eighteenth century without mortar. Photo: www.pmrmaeyaert.com (CC BY-SA 3.0) What to see and do in Oncala