(Image credit: irkatikh / Instagram) San Francisco stretches approximately 230 square miles and has a population of more than 870,000 people. With a city this large and diverse, it only makes sense that each neighborhood has attractions and character all its own. Two of its western neighborhoods, the Richmond District and Sunset District, are popular places to visit for residents and tourists alike. Below are several highlights from each neighborhood to add to the must-see list. Richmond District Over the past several years, the Richmond District has become one of the leading areas for breakfast, lunch, dinner, and drinks. It…