It's called "Canada's Largest Ribfest" and is held at Spencer Smith Park which is right on the lake at Lakeshore and Brant. I've gone every year since 2005. I usually go for just 1 day but this year I went on Friday, Sunday, and after the game on Monday. I don't even bother buying ribs since the lineups for every booth is so long. There's this great brewpub (Pepperwood)across the street so I walk over there for a beer instead of buying beer at ribfest.