Corwin Street Community Garden at Corwin near Douglas is not easy to find but worth the effort. If you take 21st Street west towards Twin Peaks from the Mission district and turn right on Douglass, where Douglass stops is Corwin bearing to the left. This lovely garden retreat won a San Francisco Beautiful award for 2004. It has a wide range of mostly native trees, shrubs and plants many with helpful informational labels. At the entry area are full lists of birds and butterflies seen in the garden.