Named after the Prophet’s daughter, the Fatimids were a major Ismaili dynasty that established their rule in 909 in modern-day Tunisia. In 973, they transferred their seat to Cairo, a city founded by Fatimid Caliph-Imam al-Mu’izz. In Cairo, the Fatimids promoted intellectual activities, founding major institutions of learning and libraries. Cairo became a major centre of Islamic scholarship, sciences, art, and culture in addition to playing a prominent role in international trade and commerce. The Fatimid dynasty developed a distinctive visual language, prominently displaying their doctrine of Imamat.

Read more here: https://nimirasblog.wordpress.com/2020/09/24/fatimid-art-incorporated-the-doctrine-of-imamat/
Nimira’s Blog (Nimira Dewji) comprises short articles on Ismaili history and various topics of Muslim civilisations including art, architecture, devotional and other literature, and quotes by Mawlana Hazar Imam. https://nimirasblog.wordpress.com/