La version française de cet article, non publiée, est déposée dans les archives ouvertes de HAL AMUInternational audienceAs a geographer and with the supply of the numeric tools by internet for teledetection, the author was allowed to identify the real landscapes of two watercolours made by the painter William Turner during his travels in France ( property of Manchester Art Gallery):119.115:"Alpine landscape", represents "The Bastille in Grenoble from the valley of the Isère" up the river1947.1"Sisteron seen from the North" is also "The Bastille in Grenoble from the village of La Tronche"La formation de géographe et les outils actuels fournis sur internet par les géoportails pour la télédétection ont permis à l'auteur d'identifier deux aqua...