Qolsharif Mosque
The Qolşärif Mosque (pronounced, also spelled Qol Sharif, Qol Sherif and Kol Sharif via the Tatar Колшәриф мәчете, Qolşärif mäçete, and Kul Sharif via the Russian мечеть Кул-Шариф, mechet Kul-Sharif) located in Kazan Kremlin, was reputed to be – at the time of its construction — the largest mosque in Russia, and in Europe outside of Istanbul.
Read more about Qolsharif Mosque: History