Cheesesteaks are so ingrained in Philly tradition that visitors don’t dare depart the city without sampling the city's namesake sandwich. At Pat’s, diners come for the original—founder Pat Oliveri created the sandwich in 1930—and are willing to suffer long lines and follow strict instructions for “How to Order a Steak.” Make sure you come with cash and a decisive palate—if you stumble over your order you may be sent to the back of the line. But stay steadfast and the reward is yours: thin slices of juicy ribeye, smothered with melted cheese and grilled onions, and stuffed into a crisp Italian roll. It doesn’t get more classic than this.