Have you ever seen any beautiful walls in SF? It's not just graffiti but they sometimes have meanings. Join the Lower Polk Alleyways District in the unveiling of six large- scale murals unified around the theme “San Francisco: Its History and its Diversity” The six large - scale murals are; Dray Ali FutrellWill Durkee & Marcus Lee, Marina Perez-Wong & Elaine Chu (Twin Walls), Mel Waters, and Yukako Ezoe & Naoki Onodera (Bahama Kangaroo). Meet Colm at 2pm in the hostel. Photo courtesy of sf.funcheap.com