Lonely Planet Lonely Planet Los Angeles, San Diego & Southern California is your passport to all the most relevant and up-to-date advice on what to see, what to skip, and what hidden discoveries await you. Dive into a glittering Palm Springs pool, join the human parade at funky Venice Beach, or search tide pools for starfish in sunny San Diego; all with your trusted travel companion. Get to the heart of Los Angeles, San Diego, and Southern California and begin your journey now!