What is the St Lawrence Seaway?

The Saint Lawrence Seaway which opened in 1959, is a 189 mile stretch of waterway between Montrealand Lake Ontario. Often called the ‘Gateway to North America’, the seaway has 7 locks, 5 on the Canadian side and 2 on the American side. These locks are capable of lifting seagoing vessels to 246 feet above sea level. In July 2009, the seaway celebrated it’s 50th anniversary.