The city of Cordoba, in southern Spain, is a UNESCO World Heritage Site best known for its Great Mosque. What makes this mosque particularly interesting is that what began as an Islamic place of worship in the 7th century was converted into a Roman Catholic cathedral six centuries later, resulting in a spectacular blend of Muslim and Christian architecture. Pillared archways, Quranic inscriptions, a minaret/belltower and cathedral nave – you’ll find them all, plus more.