Sault Ste Marie - Soo Locks

Navigable only from mid-April to mid-December the 2km / 1.25mi long canals on the U.S. and Canadian sides of the frontier at Sault Ste Marie together make up the world's busiest waterway. Well over 100 million tons of freight (mainly mineral ore and grain) pass through the locks en route from the industrial centers, mining and wheat growing areas around Lake Superior. A boat trip through the "Soo Locks" - those on the Canadian side of the St Mary's Rapids were completed in 1895 - is an experience not to be missed.