st. sergius church in the kirillo-belozersky monastery, vologda region. russia

ancient architecture belozersky castle cathedral chapel christianity church citadel cloister convent cross cyrilbelozersky defend dome fort fortification fortified fortress gate grass heritage history kirill kirillobelozersky kirillov kremlin lake landmark landscape medieval monastery monument museum nature north old orthodox region religion russia russian sergius sky st stone summer temple tower travel vologda wall water