Structures created for other purposes that have been made notable by their age, size or historic significance may also be regarded as monuments. This can happen because of great age and size, as in the case of the Great Wall of China, or because an event of great importance occurred there such as the village of Oradour-sur-Glane in France. Many countries use Ancient monument or similar terms for the official designation of protected structures or archeological sites which may originally have been ordinary domestic houses or other buildings.