The Tour des Archives is the keep of a former castle in the commune of Vernon in the Eure département of France.
Its origin dates to 1123, built by King Henry I of England, the son of William the Conqueror. It is 22m high and is a rare existing example of a round tower in Normandy, like the so-called tour Jeanne d'Arc (Joan of Arc Tower) of the former Rouen Castle.
The Tour des Archives has been classified since 1840 as a monument historique by the French Ministry of Culture.