San Diego is a large and pleasant coastal city right on the Pacific Ocean in Southern California. It's home to 1.3 million citizens and the second-largest city in the state with many universities and good swimming beaches. It's also known for its ideal climate, bio and communications technologies, long history, nightlife, outdoor culture and ethnic diversity.
The city sits just north of the Mexican border, across from Tijuana. Though a large city, San Diego has a somewhat slower paced atmosphere and, when visiting, some may find it provides a soothing break from the typical hustle-bustle of a city of its size.