the area. Visigothic church According to traditional accounts, the present-day site of the Cathedral–Mosque of Córdoba was originally a Visigothic Christian church dedicated to Saint Vincent of Saragossa, which was divided and shared by Christians and Muslims after the Umayyad conquest of Hispania. As the Muslim community grew and this existing space became too small for prayer, the basilica was expanded little by little through piecemeal additions to the building. This sharing arrangement of the site lasted until 785, when the Christian half was purchased by Abd al-Rahman I, who then proceeded to demolish the church structure and build the grand mosque of Córdoba on its site. In return, Abd al-Rahman also allowed the Christians to rebuild other ruined churches – including churches dedicated to the Christian martyrs Saints Faustus, Januarius, and Marcellus whom they deeply revered – as agreed upon in the sale terms. The historicity of this narrative has been challenged as archaeological evidence is scant and the narrative is not corroborated by contemporary accounts of the events following Abd al-Rahman I's initial arrival in al-Andalus. The narrative of the church being transformed into a mosque, which goes back to the tenth-century historian Al-Razi, echoed similar narratives of the Islamic conquest of Syria, in particular the story of building the Umayyad Mosque in Damascus. For medieval Muslim historians, these parallels served to highlight a dynastic Umayyad conquest of Spain and appropriation of Visigothic Córdoba. Another tenth-century source mentions a church that stood at the site of the mosque without giving further details. An archaeological exhibit in the mosque–cathedral of Cordoba today displays fragments of a Late Roman or Visigothic building, emphasizing an originally Christian nature of the complex. According to Susana Calvo Capilla, a specialist on the history of the mosque–cathedral, although remains of multiple church-like buildings have been located on the territory of the mosque–cathedral complex, no clear archaeological evidence has been found of where either the church of St. Vincent or the first mosque were located on the site, and the latter may have been a newly constructed building. The evidence suggests that it may have been the grounds of an episcopal complex rather than a particular church which were initially divided between Muslims and Christians. Pedro Marfil, an archeologist at the University of Cordoba, has argued for the existence of such a complex – including a Christian basilica – on this site by interpreting the