On the French route of the Pilgrim's Route to Santiago de Compostela, O Cebreiro has a Grail some consider to be sacred and others to be miraculous. O Cebreiro is a village which has a series of pallozas, or round stone houses with a straw roof, which are still standing and which were inhabited until relatively recently. One of them, but of recent construction, forms part of one of the two country holiday establishments in town; another, much older, has been converted into an ethnological museum, which has free entry and is open in the mornings and afternoons. A must in O Cebreiro is a visit to the pre-Romanesque church, the oldest remaining fully intact on the Pilgrim's Route to Santiago de Compostela, and which contains a Holy Grail. Its bells rang during the winter to guide the pilgrims through the mists. You should also stop by the San Giraldo de Aurillac lodging house, without a doubt the most frequented after Roncesvalles since it has been in operation since the 9th century.