The definition of a winter garden is a conservatory devoted to the cultivation of winter-blooming plants. From the wealth of images online, we have selected a series that captures the sense of winter's bleakness beyond the glass walls of the conservatory, where water features are frozen and the glass panes of the roof have traces of frost. Yet, illuminated at night or bathed in sunshine on a crisp winter's day, the winter garden not only affords shelter to vulnerable plants, but also a warm…