San Diego is a city located on the Pacific coast of California. California's second largest city enjoys a Mediterranean climate, an idyllic setting on the ocean, between two well-protected bays and extended by the beautiful Coronado Island. You may be familiar with the port of San Diego, which is famous for the presence of the U.S. Navy and one of the largest fleets of warships in the world (it is possible to visit some of the ships). You can also visit San Diego's historic districts, Old Town and Gaslamp, which are easily explored on foot. The zoo is also a must-see, considered one of the richest and most beautiful zoos in the world, which you can visit with your family or friends.