A diner is a casual restaurant that typically serves a variety of American comfort food. Diners often have a retro or nostalgic design, featuring booths, counter seating, and a menu that includes breakfast items, sandwiches, burgers, and desserts. They are known for their friendly atmosphere and are popular for both quick meals and leisurely dining. Many diners are open 24 hours, making them a convenient option for late-night meals. They often attract a diverse clientele, from families to late-night workers. Diners are an iconic part of American culture, often associated with the 1950s and classic road trips.