Saint Eulaly of Gállego is between Ayerbe and Agüero. We could say that it is an enclave of the province of Zaragoza in the one of Huesca.
Its inner city is based on the hill of San Peter which is crowned by the dedicated hermitage this saint. In this village there are several noble buildings and the parochial temple is dedicated to Sanit Eulaly.
It also includes a smaller organization of "Mountain range of Estronad".