To many people, back alleys are dark and dirty places that draw neither fascination nor inspiration. But not to the internationally renowned German Photographer Michael Wolf, who has been fascinated and inspired by the happenings in Hong Kong's back alleys. Informal Solutions: Observations and Around Hong Kong's Back Alleys (2016) is a documentation of his discoveries over the last 13 years of exploration. Born in Germany, he worked as a photojournalist in Europe and the US, and has since turned his attention to capturing the overlooked qualities of megacities. In particular, his fascination with the city of Hong Kong - where he is based since 1994 - has produced many photographic artworks that are collected by internationally renowned museums and galleries, including the Metropolitan Museum of Art, Brooklyn Museum, San Jose Museum of Art, and the Museum of Contemporary Photography in Chicago.