The Qol Šärif Mosque, also called Quol Sharif, is located in the Kazan Kremlin (Russia) and was declared a World Heritage Site in 2000. Today, its main function is that of a museum of Islam. However, thousands of people gather there to pray during the celebration of important Muslim celebrations. You have all the information in: «What are the main religions of the world?«.
You have all the information in: "What are the main religions of the world?".