Population: 3,740,026 (metropolitan area)
Cape Town is the second-most populous city in South Africa, after Johannesburg, and the provincial capital and primate city of the Western Cape. As the seat of the National Parliament, it is also the legislative capital of the country. It forms part of the City of Cape Town metropolitan municipality. The city is famous for its harbour, for its natural setting in the Cape floral kingdom, as well as for such well-known landmarks as Table Mountain and Cape Point.
Population: 3,095,313 (metropolitan area)
San Diego is a major city in California, on the coast of the Pacific Ocean in Southern California. San Diego is the eighth-largest city in the United States and second-largest in California and is one of the fastest growing cities in the nation. San Diego is the birthplace of California and is known for its mild year-round climate, natural deep-water harbor, extensive beaches, long association with the U.S. Navy, and recent emergence as a healthcare and biotechnology development center.