Four Diamond
Excellent properties displaying a high level of service and hospitality. These properties offer a wide variety of amenities and upscale facilities in the guest rooms, on the grounds and in the public areas.

Five Diamond
World-class properties exhibiting an exceptionally high degree of service; striking, luxurious facilities and many extra amenities. Guest services are executed and presented in a flawless manner. A professional, attentive staff pampers the guest. The properties' facilities and operation help set industry standards in hospitality and service.

Four Diamond
A high degree of sophistication, thus creating an adult dining experience. Complex food is creatively presented. An extensive wine list is offered. The service staff, often formally attired, is professionally trained. The décor is distinctive, stylish and elegant; some establishments are casual while still offering refinement or formality.

Five Diamond
A memorable occasion - the ultimate in adult dining. Food shows the highest culinary skills, evident in all areas of preparation and presentation. An extensive wine list is available. A professional staff - often in formal attire - provides flawless and pampering service. The décor has classic details, often formal, and reflects comfort and luxury.

Early 1900s -- AAA begins listing accommodation information in its travel publications.

1937 -- The first field inspectors are hired to inspect hotels, motels and restaurants.

1963 -- AAA begins rating accommodations as good, very good, excellent and outstanding.

1977 -- The current one- to five-diamond rating system is introduced.

1999 -- AAA develops separate guidelines and requirements for bed & breakfasts, and country inns.