Nested on the southwestern slope of Mount Davidson in District 4 is Sherwood Forest. Never heard of it? That's because it's San Francisco's smallest neighborhood with just two by three streets. Smushed between St. Francis Wood and Miraloma Park, Sherwood Forest starts at the cusp of Yerba Buena and Casitas avenue and covers all of Lansdale Avenue and Dalewood Way facing the dense vegetation of Mount Davidson Park. In total there are about 200 homes in the neighborhood. The only street that starts and ends in Sherwood Forest is Robinhood Drive, a street that's so hidden and difficult to find that the late San Francisco Chronicle columnist Herb Caen once penned an article about getting lost trying to find it on his way to Thanksgiving dinner.