Mr. Submarine, Calumet City

Mr. Submarine opened as a tiny sub shop in 1975 and has grown into a franchise that's still operated by the founders and their family members. Aside from their classic cold-cut subs, the shops also feature a slew of other fast casual staples.

• Regional classics: Homemade Italian beef is topped with peppers and Philly chicken sandwiches are marinated in-house.
• Daily specials for two regular subs with assorted cold cuts; or buy three and get the fourth sub for free.
• Other offerings: Chicken tenders, shrimp, cheeseburgers, Polish sausage, gyro, hot dogs