Ключевые слова: america, army corps of engineers, attractions, building, canada, canal, destinations, district, economy, famous, freighters, going, goods, great lakes, industrial, industry, infrastructure, international, into, landmark, level, lock, michigan, sault ste marie, shipping, sightseeing, soo locks, st marys river, structure, things to do, through, tourism, tourist, transport, transportation, travel, unusual, upper peninsula, usa, view, water, waterfront,