High Quality Content by WIKIPEDIA articles! The Cenotaph is a war memorial located in Whitehall, London. It began as a temporary structure erected for a peace parade following the end of World War I, but following an outpouring of national sentiment it was replaced by a permanent structure and designated the United Kingdom`s official war memorial. Designed by Sir Edwin Lutyens, the permanent structure was built from Portland stone between 1919 and 1920 by Holland, Hannen & Cubitts, replacing Lutyens` earlier, temporary wood-and-plaster cenotaph in the same location. An annual National Service of Remembrance is held at the site on Remembrance Sunday, the closest Sunday to 11 November (Armistice Day) each year. Lutyens` cenotaph design has been reproduced elsewhere in the UK, Canada, New Zealand, Bermuda and Hong Kong.