Wikipedia picture of the day on October 8, 2018: View of Shāh Chérāgh (Persian for "King of the Light"), a funerary monument and mosque in Shiraz, Iran. It houses the tomb of the brothers Ahmad and Muhammad, sons of Mūsā al-Kādhim and brothers of ‘Alī ar-Ridhā. The two took refuge in the city during the Abbasid persecution of Shia Muslims. The tombs became celebrated pilgrimage centres in the 14th century when Queen Tashi Khatun erected a mosque and theological school in the vicinity. Wikipedia"