Atlanta is the biggest city in southeast USA and the capital of Georgia. It has a total area of 350 square kilometers and a population of  about 500,000. It is the center of business, finance, industry and transportation of southeast USA. Besides advanced aircraft industry,  it’s the nation’s third-largest concentration of Fortune 500 companies. It hosts the global headquarters of several corporations such as the Coca-Cola, the Home Depot, Delta Airlines and AT&T Mobility.