There is. Depends on where you live, but I live on the east side of the GTA and there is a fabulous casino about 30 mins from my door called Great Blue Heron in Port Perry, ON.
There they boast one of the best poker rooms in the province with a ton of tournaments, a great poker pit staff and awesome players to socialize with. However, much to my dismay, they typically only spread limit games, usually 5-10 and 10-20 Hold'Em, and 10-20 Omaha.
I've sat to play 5-10 limit hold'em and stopped pretty quick because it was super loose. I can only imagine how loose and how huge the pots get playing 10-20 Omaha. They play 10 handed tables to, so it wouldn't shock me in the least bit if you typically saw pots north of 50BB/ hand.
I know other
casinos in Ontario typically stay away from limit - GBH is the only one in Ontario I know of that plays limit. Thankfully they have started spreading 1/2 NL Hold'Em.