Any good parks in Canada?

It has been a while since I have been to Canada, and I am hoping to go back some day. Used to hop to Toronto about every other weekend to Canada's Wonderland which is a really great park. Also been to SF La Ronde. And I know of Marine land near Niagara Falls.

Are there any other parks there worth a visit? If there are no new restrictions for next summer I might trek back to Toronto should I get another platinum pass to Cedar Fair.

Will most likely attempt Kings Island again next summer too. Holiday World and Indiana Beach for their Tripple loop coaster.