The pilgrimage along the Way of Saint James constituted the principal mechanism for the introduction of new currents of thought into the Iberian Peninsula, such as Romanesque architecture. Taking this into account, we examined whether the standard tradition on the orientation of Christian churches was followed. We measured the orientation of 108 churches built between the end of the 10th and 13th centuries near the French Way, in the ancient kingdoms of Leon and Castile. The statistical analysis shows a clear tendency to orientate the apse of the church eastwards, specifically slightly to the north of due east. Furthermore, we found that the orientation patterns differ from one kingdom to the other. In Leon, there seems to be a predilection for the local tradition of aligning the apse toward the ecclesiastical equinox. Castile, in contrast, built their churches orientated to Easter, one of the most important feast days of Christianity.

En este trabajo se examina, desde la perspectiva de la Astronomía Cultural, si las iglesias románicas del Camino de Santiago siguen un patrón de orientación común a todas ellas. Para ello, se ha obtenido la orientación de 191 templos en los antiguos reinos de León y Castilla, y se ha realizado un estudio comparativo. Ambos reinos comparten orientaciones hacia la salida del sol el domingo de Pascua, probablemente obtenidas en su mayoría mediante observación directa del sol sobre el horizonte, aunque León presenta una fuerte preferencia por el equinoccio eclesiástico del 21 de marzo, que no aparece en Castilla. También se han analizado las iglesias pertenecientes al Camino y una muestra de contraste en cada reino, lo que ha permitido extraer información relevante sobre las iglesias construidas en lugares concretos como Santiago de Compostela, la Ribeira Sacra, Sahagún o la Montaña Palentina

A variety of Prehistoric dry-stone monuments are ubiquitous in Western Sahara, a region delimited by the boundaries of the former Spanish colony. With either burial or ritual functions, these monuments are spread throughout the Sahara Desert creating sacred landscapes and housing the memory of millennia of occupation. Previous research has explored the role of the sky in various aspects of the life of early inhabitants, such as their religious beliefs or funerary practices. These have been identified by the patterns of location and orientation of these constructions and their relation to particular astronomical events. This work presents a statistical analysis of the orientation of more than 200 prehistoric dry-stone monuments in Western Sahara occupied by Morocco, currently the biggest sample ever studied in this area and the first unique sample obtained in situ. The results show that the orientations follow similar trends observed in other areas of North Africa and the Mediterranean and that they fit with the visibility of particular celestial objects. This provides new insights into the ideas about space, time, and death and the cultural changes and mobility of those peoples and contributes to the preservation of a highly threatened heritage that is immersed in a vast land currently under dispute.