"Blizzard Days" For the first time, the 2015 competition included a mobile category. The winner, Cocu Liu from China, captured the Chicago Board of Trading Building. Cocu is taking over the Guardian Cities Instagram account this week to show us Chicago
"Blizzard Days" For the first time, the 2015 competition included a mobile category. The winner, Cocu Liu from China, captured the Chicago Board of Trading Building. Cocu is taking over the Guardian Cities Instagram account this week to show us Chicago © Photograph: Cocu Liu

The CBRE Urban Photographer of the Year competition – now in its ninth year – encourages professional and amateur photographers to capture cities at work

"Xyclops" Oscar Rialubin from the Philippines was named overall winner of the CBRE Urban Photographer of the Year with his image of a watch repairman at work in Doha, Qatar
"Xyclops" Oscar Rialubin from the Philippines was named overall winner of the CBRE Urban Photographer of the Year with his image of a watch repairman at work in Doha, Qatar © Photograph: Oscar Rialubin