Interactions between Islamic and Christian traditions in the Iberian Peninsula

Pre-Romanesque churches in the Iberian Peninsula include a number of

constructions from the fourth-fifth to the eleventh century when the first

Romanesque churches appeared in the north of Spain. This period of time

coincided with the Muslim invasion of the Peninsula. An important number

of churches and mosques were built with prescriptions for the orientation,

which possibly included astronomical observations. Such prescriptions can be

investigated showing that both groups of monuments interacted by avoiding

the areas of theoretical influence of the other religion while trying to covey

with their own orientation rules.