In order to visit Canada to meet your children, you need to have a super visa. This visa is specially designed for those parents wishing to go to Canada, the children of the parents should have Canadian permanent residency.
Super visa insurance calculator shows you the cost of insurance in Canada. This visa has a validity of 10 years but you can stay for 2 years then you have to come back to your country and after some time you can go back again to Canada. The Super visa permits many parents and grandparents to visit their children. Documents required for super visa are as follows:-
1. Bank statement
2. A letter of invitation from a sponsored person.
3. Documents showing the relationship between both of you.
4. Documents for Personal information
5. Status of your child in Canada
6. Your children's income set.
7. Your passport
8. Your photograph
9. Your medical insurance from the Canadian insurance company
The super visa gives permission to so many parents by year. Many parents and grandparents visit their children who are a permanent resident in Canada and can take their responsibility and have the right amount of income that your children can support you financially. This visa is for 10 years. It will need 45 to 50 days to process. Super visa approval depends on your country also. You are allowed to stay up to 2 years in Canada with your children and grandchildren. You can also extend your visa before 6 months of expiry.
For more details: https://www.travelance.ca/