San Diego is a city located in southern California. It is the second-most populous city in the state, after Los Angeles. The city is known for its mild climate, natural deep-water harbor, and extensive beaches. San Diego is also a major center for the aerospace and defense industries.
San Diego’s economy is largely based on tourism, agriculture, biotechnology, and software development. The city is home to numerous tourist attractions and is one of the top destinations in the United States for vacationers. The city also has a strong military presence, as it is home to several major military bases and facilities.