dukhovskaya church of trinity sergius lavra. unesco world herit

1476 1477 2014 altar ancient arches architecture august basilica bell building cathedral chapel christ church cupola descent dukhovskaya exterior fortification fortress frescoes friary herit heritage historic history holy honor icon images immaculate jesus landmark lavra light mary men monastery old orthodox outside patriarch poopular posad religion russia sergiev sergius sightseeing site sky spire spirit symbol the tourism touristic tower traditional travel trinity unesco view wall window world worship