as the biggest city in canada and one of the biggest in all of north america, toronto is a popular destination for tourists. it is where you can find the cn tower, which is the tallest free-standing (not supported) structure in the americas and one of the seven wonders of the modern world. there are some other buildings, including the city hall and the rogers centre, that are well known for their design style. there are many skyscrapers, because many large banks of canada and other companies have their main offices in toronto, and the toronto stock exchange which is the biggest stock market in canada.