A map creation device that includes an in-map position control unit that sets, on the basis of information pertaining to a mobile body or an environment, position coordinates of the mobile body, the position coordinates being set on a map space in which a boundary demarcating a space and a boundary on a side opposite the boundary are connected, and a sensing reflection unit that creates an environment map corresponding to the environment surrounding the mobile body by causing environment information, sensed by the mobile body, to be reflected to the map space.