San Diego is a popular tourist destination with a population of 1.3 million people. The city boasts a 70-mile coastline, 18 incorporated cities, and many charming communities and neighborhoods. The top attractions in San Diego include Balboa Park, San Diego Zoo, Torrey Pines State Reserve, and more. Visitors can get to San Diego by flight or train, and the city's tourism industry employs almost 184,000 people.