blue tower. trinity sergius lavra

2014 altar ancient arches architecture august background basilica bell black blue building cathedral chapel christ church cupola day eastern europe european exterior famous foliage fortification fortress frescoes friary heritage historic history holy icon images immaculate jesus landmark lavra light mary men monastery nobody old orthodox outside patriarch poopular posad religion russia sergiev sergius sightseeing site sky spire sun sunlight sunny symbol tourism touristic tower traditional travel tree trees trinity unesco view wall window world worship