The Kul Sharif Mosque (Tatar: Кол Шәриф мәчете; Russian: Мечеть Кул-Шариф, romanized: Mechet' Kul-Sharif) located in Kazan Kremlin, was reputed to be – at the time of its construction – one of the largest mosques in Russia, and in Europe outside of Istanbul.
Originally, the mosque was built in the Kazan Kremlin in the 16th century. It was named after Kul Sharif, who was a religious scholar who served there. Kul Sharif died with his numerous students while defending Kazan from Russian forces in 1552 during the Siege of Kazan, and the mosque was destroyed by Ivan the Terrible's forces.[1] It is believed that the building featured minarets, both in the form of cupolas and tents. Its design was traditional for Volga Bulgaria, although elements of early Renaissance and Ottoman architecture could have been used as well.[citation needed]

Several countries contributed to the fund that was set up to rebuild Kul Sharif Mosque, namely Saudi Arabia, and United Arab Emirates.[citation needed] Nowadays the mosque predominantly serves as a museum of Islam.[citation needed] At the same time during the major Muslim celebrations thousands of people gather there to pray.[citation needed]
The Kul Sharif complex was envisioned to be an important cornerstone of Kazan's architectural landscape. Besides the main mosque building it includes a library, publishing house and Imam's office.[citation needed]