Guillos comes from the Celtic "guillio", which means "see" or "gwilliur", which means "sentinel", "watch". In Gascon, that Guilhòs ERP conversion, e lo parlan tanben Gascon. It is a sparsely populated region.
The origin of the village dates from the 12th century, it formed around a castle located on a bluff overlooking the moor where we had seen, weather permitting, until Preignac and Langon.
In the 12th century, the parish church of Guillos, Romanesque architecture, was too small to accommodate all his faithful people. It was a place of passage, prayer and rest for "Jacquets" de Compostela from the neighboring village of Saint-Michel Rieufret. There remains no vestige of the church today, but still remain on the ground stones, testimony to his edification.
Besides its stones, Guillos has a rich natural heritage: the pine forest that offers a wide variety of plant and animal species. The bend of a path, you may have the chance to observe deer, pheasants, foxes, wild boars and squirrels.
