Ключевые слова: american, american falls, attraction, autumn, blue, canada, cascade, churn, cliff, day, edge, evening, falls, famous, flow, foam, forest, geography, gorge, landmark, landscape, mist, natural, nature, niagara, niagara falls, ontario, outdoor, outdoors, outside, park, popular, power, powerful, rapids, river, rush, scenic, sky, splash, spray, sunset, trees, usa, view, water, waterfall, wet, wonder,