Izge Bolgar Zhyeny in Bolgar
Izge Bolgar Zhyeny is a religious festival held in the ancient town of Bolgar, Tatarstan, commemorating Volga Bulgaria's adoption of Islam as its state religion in 922. Tens of thousands of pilgrims gather at the historic Bolgar fortress each year for a program that culminates in a collective prayer, Taubah, led by Russia's supreme mufti near the site's Small Minaret.
Long before it became an archaeological site drawing history-minded tourists, Bolgar was the capital of a medieval state, Volga Bulgaria, and in the year 922 it became the place where that state formally adopted Islam.