Diners are casual restaurants that typically serve a variety of meals, including breakfast, lunch, and dinner. They often have a retro or nostalgic design, featuring booths, counter seating, and a menu that includes comfort foods like burgers, sandwiches, and milkshakes. Diners are known for their friendly atmosphere and are popular spots for both locals and travelers. Many diners are open 24 hours, making them convenient for late-night meals. They often reflect the culture of the area they are located in, with some diners offering regional specialties. The concept of the diner is closely associated with American culture, particularly in the mid-20th century.