Michael Wolf, a German photographer whose work showed how people live in major cities such as Hong Kong, Tokyo, Chicago and Paris, died this week at the age of 64. He is best known for his 2003-2014 series, Architecture of Density, which captured the repetitive architectural patterns of Hong Kong's massive tower blocks. 

Born in Germany in 1954, Wolf moved to Hong Kong in 1994, where he worked as a photojournalist. In an interview with the New Republic, he said it was there that he became interested in architecture, and the larger umbrella topic of "life in cities."

Over the course his career, his work has captured rush hours in Japan (Tokyo Compression), the back alleys of Hong Kong (Informal Solutions), the Blade Runner-like scenes of Chicago's downtown (Transparent City), and quirk scenes discovered via Google Street view (A Series of Unfortunate Events). His latest project, Cheung Chau Sunrises, is a compilation of photos of sunrises taken between 5:30 AM and 7:30 AM each morning over the past two years. 

Below, is a selection of his work.