A two hour Soo Locks boat tour through the American and Canadian locking system. The Soo Locks have been referred to as one of the great wonders of the world and it is still the largest waterway traffic system on earth. Your boat will travel along the international shoreline of the lower harbor letting you experience all the sights, sounds, and excitement of Michigan's oldest city, Sault Ste Marie. Soo Locks Boat Tours is one of Michigan's top attractions, and is recognized by AAA as a GEM® Attraction. Many departure times are available.