Luxury or fine dining restaurants may include elements such as full-service ingredients, or be \"express\" with self-service foods. The U.S. Department of Agriculture classifies fine dining restaurants as having either \"fine dining\" or \"coffee shops\" based on the level of service they offer. It distinguishes between these two types of establishments with the criteria that fine dining restaurants must have a \"waiter\", while coffee shops do not need to have a waiter. Fine dining restaurants are sometimes called \"table d'hôte\" restaurants. The USDA also classifies restaurants as either full-service or limited-service. Full-service restaurants are defined as restaurants that typically offer table service, detailed cooking of food at the table by waitstaff, and possibly room service.
Restaurants have a combination of menu decor and architecture, aesthetics, and portraiture. A restaurant space may be furnished with a different set of materials and furniture designs as compared to an art gallery. Food can be displayed in a variety of ways, with kitchen equipment, and tabletop finery. Restaurants may have one-, two- or many-floor layouts, with dining space on any floor or terrace visible to patrons. Typical architectural features include large windows, flanking columns, picture windows and ceilings, picture lights, and mural painting. Design may be influenced by industry, the type of clientele, and concepts of inside versus outside. Amenities such as waitstaff, music, and ambience help to create a \"fine dining\" experience, giving restaurants an upscale appearance.
Drive-ins became popular and the big commercial stations were built in the 1920s during the greater automotive popularity. The first modern fast food restaurant opened in West Haven, Connecticut in 1939. General Foods opened their first drive-in store in 1938, making them the first national fast food chain. By the 1940s, the number of these outlets reached over 25,000. Drive-in restaurants were differentiated from other fast food chains by their long-lasting parking lot and tables, which allowed customers to drive in and park their car for a meal. 7211a4ac4a