Winner of the architecture category is Sandra Herber, from Canada, for her series of images of ice fishing huts on Lake Winnipeg. She said: 'These huts, shacks or permies (as they are called in Manitoba) must be transportable, protect their occupants from the elements and allow access to the ice below for fishing. Once these requirements have been met, the owners are free to express their personalities in the shape, structure and decoration of their huts - they are large or small, decorated or plain, luxurious or utilitarian and everything in between'
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