panoramic aerial view of holgin pond and islands in peterhof in summer, reflection in the water, blue color of the water, green

above aerial ancient architecture autumn background birdseye blue calm cathedral christianity church cityscape closeup construction cross dome domes drone from golden green height historical history holgin islands landmark nature new old orthodox paul pavilion peter peterhof petersburg petrodvorets photography pond postcard reflection saint sky smooth suburb summer sunset temple tourism traditional travel trees tsar view water with