trinity sergius lavra, sergiev posad, russia. unesco world herit

altar ancient arches architecture basilica bell building cathedral chapel christ church cupola exterior fortification fortress frescoes friary green heritage historic history holy icon images immaculate jesus landmark lavra light mary men monastery nobody old orthodox outside patriarch plant plants posad pure purity religion russia sergiev sergius sightseeing site sky spire symbol tourism tower traditional travel tree trinity unesco wall window windows world worship