Southern California is one of the nation's most populated regions with population being centered around the two largest cities, Los Angeles and San Diego. The City of Los Angeles, with a size of 498.3 sqare miles, is the 14th largest US city by land area. It spreads for 44 miles longitudinally and for 29 miles latitudinally. The environment of Southern California is uniquely structured in that some of its most heavily developed urban areas lie in close proximity to vast, dry areas left largely untouched (such as the Mojave desert).
The two largest airports in Southern California are the Los Angeles International Airport (LAX) and the San Diego International Airport. A number of smaller airports are located throughout Southern California to serve the region. The contiguous ports of Los Angeles and Long Beach make up the nations busiest and most significant seaport.
Major Cities in Southern California:
Los Angeles and the surrounding area is widely known as the entertainment capital of the world. Hollywood is the center of the motion picture industry. Southern California is also known for its "Tech Coast," a name used to describe the great concentration of research and development activity at the numerous local universities and research centers. Especially the area around San Diego is a hot spot for biotechnology. The "Tech Coast" also includes the countless technology-based companies located along the coast between L.A. and San Diego.