Andalusian Mosque, also Al-Andalusiyyin Mosque, is a historical mosque located in Fes el Bali, Fes, Morocco. It was built between 859-860 AD by Maryam bint Mohammed bin Abdullah al-Fihri, the sister of Fatima al-Fihri who built the al-Qarawiyyin mosque in 859 AD. The mosque is one of the oldest mosques in Morocco and is one of the few surviving monuments from the period of the Idrisid dynasty. The Mosque of the Andalusians was inscribed as a UNESCO World Heritage Site in 1981 as part of Medina of Fez.