Approximately nine kilometres from Lens, the Canadian National Vimy Memorial was opened in 1936, dedicated to the Battle of Vimy Ridge (part of the Battle of Arras) and the First World War Canadian soldiers who lost their lives during the war; the Memorial is also the site of two Canadian cemeteries. The centennial commemoration of the Battle of Vimy Ridge was held at the Memorial on 9 April 2017. The official ceremony included comments from Canadian Prime Minister Justin Trudeau, Governor General David Johnston as representative of the Monarchy of Canada, Prince Charles as representative of the Monarchy of the United Kingdom, Prince William, Duke of Cambridge, Prince Harry, the President of France François Hollande, and the Prime Minister of France Bernard Cazeneuve.