The Great Mosque of Herat (Persian: مسجد جامع هرات‎, Masjid-i Jāmi‘-i Herāt) or "Jami Masjid of Herat", is a mosque in the city of Herat, in the Herat Province of north-western Afghanistan. It was built by the Ghurids, under the rule of Sultan Ghiyath al-Din Muhammad Ghori, who laid its foundation in 1200 CE. Later, it was extended several times as Herat changed rulers down the centuries from the Kartids, Timurids, Mughals and then the Uzbeks, all of whom supported the mosque. The fundamental structure of the mosque from the Ghurid period has been preserved, but parts have been added and modified. The Friday Mosque in Herat was given its present appearance during the 20th century.