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 SanDiego Model Railroad Museum in Balboa Park is open Tuesday-Sunday 10 a.m. - 4 p.m. Buy tickets online or at the door. Kids 12 and under are free with paid adult.