Ключевые слова: binocular, blue, border, building, city, cityscape, distance, europe, far, focus, horizon, landmark, lens, look, lookout, metal, monitoring, observation, operated, optic, optics, outdoors, outlook, point, public, river, saintpetersburg, scenic, scope, shore, sights, sightseeing, sky, skyline, spyglass, surveillance, telescope, tourism, tourist, tourist destinations, tower, travel, vacation, view, viewer, viewing, viewpoint, vision, water,