Book excerpt: The Del Mar Fairgrounds--which hosts the county's annual fair and the Del Mar Thoroughbred Club--unites local communities in an arena that attracts worldwide attention. The stunning beauties who were crowned Fairest of the Fair and the smoldering good looks of Tommy Hernandez as Don Diego symbolized the hospitality of the San Diego County Fair, whose historic roots began humbly in the genteel port town of National City, just 10 miles north of the Mexican border. That 1880 inaugural autumn fair, initiated by developer Frank A. Kimball, showcased citrus, agriculture, and horses. Today the 22nd District Agricultural Association hosts the summer fair, which features international superstars, flower shows, livestock contests, exhibits, sports events, carnival rides, and its famed fast food, together with the Del Mar Thoroughbred Club's racing meet, which has helped make the city of Del Mar a star-studded world-class destination with a colorful history.