This year's CBRE Urban Photographer of the Year competition asked photographers to envision life in a city of the future. Spanish photographer Alfonso Béjar took out the grand prize with a glorious shot of Valencia's futurist City of Arts and Sciences.

CBRE's annual photographic competition continuously evolves from year to year, and on its 12th anniversary it received a massive 100,000 entries, a 20 percent rise from last year. Each year photographers are asked to submit images around a general theme, and this competition looked to investigate what the "essence of a future city" could be.

The most unique aspect of this competition is its 24-hour prize categories. Photographers are asked to submit up to 24 individual images across 24 categories, each representing one hour of the day. Each image doesn't necessarily need to be taken in a particular hour but they are judged on how well they represent each given timeframe.

The 4 p.m. winner, for example, is an amazing shot of a crowded rush hour train in Dhaka, Bangaldesh. The 4 a.m. winner on the other hand, captures a burst of morning light down a narrow alleyway in Lijiang, China.

Alongside 24 hourly winners, and hourly runners-up, there is a winner for best image shot on a mobile phone, and for the first time, an Instagram winner. Take a look through our gallery at all the best shots from this fascinating urban photography competition.

Source: CBRE

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