A 24-hour diner is a type of restaurant that operates around the clock, serving meals at any time of day or night. These establishments are popular for their casual atmosphere and diverse menus, which often include breakfast items, sandwiches, burgers, and desserts. They cater to various customers, including late-night workers, travelers, and those seeking a late-night snack. Many 24-hour diners are known for their classic American diner style, featuring booths, counter seating, and a retro vibe. They often serve comfort food and are a staple in urban areas, providing a welcoming space for people to gather and enjoy a meal at any hour.