Welcome to San Diego, Californias second largest city. Where blue skies keep watch on 70 miles of beaches and a gentle Mediterranean climate begs for a day of everything and nothing. Bordered by Mexico, the Pacific Ocean, the Anza-Borrego Desert and the Laguna Mountains, San Diego countys 4,200 square miles offer immense options for business and pleasure. And with the Mexican city of Tijuana just minutes from downtown, San Diego is an international experience with all the comforts of a city leading the nation in biomedical, high-tech and telecommunication industries.