"Impression Sunrise", the painting that gave its name to Impressionism, was painted by Claude Monet in Le Havre. What landscape did the painter depict? The painting has sometimes been called "sunrise" or "sunset" so what is the truth? During an in-depth investigation, we will follow the history of this extraordinary painting. First exhibited in 1874 and heavily criticised, "Impression Sunrise" is now recognised worldwide as one of the masterpieces of art history. It was saved by enthusiasts, hidden during the war, stolen and then rediscovered. It has since found a place of choice in the collections of the Marmottan-Monet Museum.