I want to move to Canada when i'm older. Wheres a nice place to reside?

I'm american and still in high school so i'm obviously na�ve about all this, but I've always wanted to move to Canada since my grandpa lived there and said he loved it up there. Where's a nice, warm city,state I may enjoy living in? I love nature most importantly, so somewhere nice and cozy. Haha thanks for any help :p