St Catharines is the sixth in size urban area in Ontario and the largets city in the Niagara region. The area was settled in the 1780′s. It is in the middle of the GTA-US trade route and is considered a hub for trade and manufacturing. The city has a population of approximately 130,000 and has both an urban and a metro area. St Catharines is on the northern entrance of the Welland Canal and is the home of Lock 3 of the canal.