The Sault Locks form the last of 16 water steps in the St. Lawrence Seaway system, linking Lake Superior with the Atlantic Ocean more than 2,000 miles away. On the two-hour cruise, you'll experience the personal thrill of locking through one of the busiest canal systems in the world, enjoying an extraordinary view of the International Bridge, Algoma Steel Inc., the world's largest jack-knife railway bridge, the St. Mary's River rapids and compensating gates, as well as viewing lake freighters and seagoing vessels bearing the flags of many nations.