San Diego is a city on the Pacific coast of Southern California, adjacent to the Mexico–United States border. With a population of over 1.3 million, it is the eighth-most populous city in the United States and the second-most populous in the state of California. San Diego is the seat of San Diego County, which has a population of nearly 3.3 million. It is known for its mild year-round Mediterranean climate, extensive beaches and parks, long association with the United States Navy, and recent emergence as a healthcare and biotechnology development center.
AdThe Best SanDiego County, California Tours and Things to Do in 2025 - Free Cancellation. Don't worry if your plans change. We offer 24/7 customer service in multiple languages.
24/7 customer service · Must-see attractions · Top-rated things to do