Quiznos is a fast food franchise of restaurants. They are based in city of Denver, Colorado. This company specializes in submarine sandwiches that have been toasted. Jimmy Lambatos opened the first Quiznos in the year 1981 in Denver. Now it has more than 500 restaurants in the United States. It also has around 600 international locations. It is known as the second largest sub sandwich franchise restaurant in North America. It's main competitor is another sub sandwich shop called Subway. This is a privately held company and can be found all cross the country.