Las Vegas serves as world headquarters for the world's largest Fortune 500 gaming company, MGM Resorts International. Several companies involved in the manufacture of electronic gaming machines, such as slot machines, are located in the Las Vegas area. In the first decade of the 21st century, shopping and dining have become attractions of their own. Tourism marketing and promotion are handled by the Las Vegas Convention and Visitors Authority, a county-wide agency. Its annual Visitors Survey provides detailed information on visitor numbers, spending patterns, and resulting revenues.