The inventive system includes a database for storing housing display data including layout information of a housing such as a real estate object, an interior display data including information regarding interior of the housing, and furniture display data including configuration information regarding furniture to be arranged in the housing. The inner space of the housing is displayable as a virtual space on the terminal of a computer of a prospective purchaser based on each of the data. The system provides a browser equipped with a manipulating menu with which a user manipulates the viewpoint or location of viewing in the virtual space. The system provides the user with each of the data via the Internet or its equivalent.