For top of the top attractions:

 

  1. Visit Toronto and see:
    • Toronto Zoo
    • Ontario Science Centre
    • Art Gallery of Ontario
    • Royal Ontario Museum
 
  1. Be in Ottawa on July 1st for Canada Day celebrations.
 
  1. View Niagara Falls in mid-winter, mid-summer, pretty much at any time!
 
  1. Take the Polar Bear Express and Agawa Canyon train rides in the Sault.
 
  1. Take the 30,000 Islands and 1,000 Islands boat cruises
 
  1. See plays at the Stratford and Shaw Festivals
        1. See Canada's scuba diving capital in Tobermory.