The Wikipedia article of the day for April 9, 2017 is Canadian National Vimy Memorial.
The Canadian National Vimy Memorial in France is dedicated to the memory of Canadian Expeditionary Force members and other Canadians killed during the First World War. Designed by Walter Seymour Allward, the monument is the centrepiece of a 100-hectare (250-acre) battlefield park, overlapping the site of the Battle of Vimy Ridge offensive (9 April 1917) that began the Battle of Arras. In that offensive, all four divisions of the Canadian Expeditionary Force participated as a cohesive battle formation for the first time, and it became a Canadian national symbol of achievement and sacrifice. France ceded the land to Canada for its memorial. Wartime tunnels, trenches, craters, and unexploded munitions still honeycomb the grounds, which are largely closed off for public safety. Preserved trench lines and several other memorials and cemeteries are contained within the park. King Edward VIII unveiled it in July 1936, and Queen Elizabeth II re-dedicated the restored monument on the 90th anniversary of the offensive. The site, one of only two National Historic Sites of Canada outside the country, is maintained by Veterans Affairs Canada.