Placed in the Montejurra piedemonte. It is provided with two clearly differentiated quarters, the dominated High Quarter for the big mass of the church and with narrow and sinuous streets of clear medieval tracing and the Slum with one more hamlet distributed.
In addition to the urban life of Roman type that he could have verified, the field was populated by a series of rural housings, villae, of that numerous Navarrese localities have found remains fechables of the Low Empire in like Arellano: I praise the Mosaic of the Town of the Muses. Also Cistercian emphasizes the church from San Roman of beginning of the XIIIth with clear influences and also from Gothic invoice.