A commemorative plaque, or simply plaque, referred to as a historical marker or historic plaque. It is a plate of metal, ceramic, stone, wood, or other material. It typically attachs to a wall, stone, or other vertical surface. The plate bears text or an image in relief, or both, to commemorate one or more persons, an event, a former use of the place, or some other thing. A monumental plaque or tablet commemorating a deceased person or persons, can be a simple form of church monument. Most modern plaques affixed in this way are commemorative of something. But this is not always the case, and there are purely religious plaques;  signifying ownership or affiliation of some sort.