Toronto is the largest city in Canada, located in the south of Ontario on the northwest coast of Lake Ontario, and has also surpassed Chicago to become the fourth largest city in North America. Toronto is one of the most diverse cities in the world. 49% of its residents are immigrants from all over the world 100 nationalities, and more than 140 languages are gathered in this North American metropolis. Because of its extremely low crime rate, pleasant environment and high quality of life, Toronto has been rated as one of the most livable cities in the world, occupying the top five livable cities in the world for many years. Toronto is also one of the richest cities in the world and the richest city in North America, occupying the top ten richest cities in the world for many years.