Hello Marcelo,
Glad you added me in your list ! In which season are you planning to go to Canada? Do you wish to go in the Eastern or Western part?
I am from the province of Québec, the French part of the country. So, this is the part of Canada I know the best. I would recommend you to visit Montréal of course, because it is a multi-cultural city with a good mix of American and French heritage. Québec city has a more European spirit in its old district. If you enjoy nature, then I would recommend to visit the region of Charlevoix, especially in the summer and the autumn.
Guy