ZAK'S DINER - Locally World Famous, and an Ottawa Institution, Zak's has been serving classic Canadian comfort food since 1986. Open 24/7! As you walk in our door you will be transported back in time. The charm of Zak’s is keeping the Diner classics untouched. We’ve made the milkshakes, the burgers, our all day breakfast and signature classics the same way for 32 years!