Ключевые слова: background, beautiful, beauty, boats, canal, city, clouds, coast, day, ecology, environment, europe, evening, grass, green, holiday, house, idyllic, journey, landscape, leiden, moored, morning, nature, netherlands, outdoors, park, plant, pond, river, riverside, scene, season, ship, shore, sky, sport, spring, street, summer, tourism, transport, travel, tree, trip, vacation, vessel, view, water, waterway,