The Parisian love of aimlessly strolling around the city is so great that they have a word for it - the 'flaneur'. The photographer Pierre Yves-Petit, nicknamed Yvon, was a 'flaneur' in Paris between the world wars, and the dramatic, elegant images he made became classics in France. The Parisian love of aimlessly strolling around the city is so great that they have a word for it - the "flaneur" is a wanderer, a gentleman of leisure who opens his senses in order to experience the city to the full. The photographer Pierre Yves-Petit, nicknamed Yvon, was a "flaneur" in Paris between the world wars, and the dramatic, elegant images he made became the most popular postcards in France.;Yvon chose startling viewpoints and unusual lighting conditions, photographing the city at sunset, in fog, in the shimmering afterglow of rain and the transforming whiteness of snow. "Yvon's Paris" reproduces over 100 of the photographer's images, recording the magic of Paris at its most photogenic.