To perceive such changes of city space visually, a three-dimensional (3D) city space model is effective. The use of buildings in a city space is complex, reflecting the number of stories, and the number of stories in many cases. Furthermore, environmental parameters, such as opening a shop developed for conditions of the location, the existence of a building which is easy to divert to some other purpose, a managerial layer, and the whole country, is closely related to city change. A city change

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... can be analyzed from various perspectives if such information can also be accumulated and displayed. If it is expressed in two dimensions, it will be restricted, but if expressed in 3D, the use situation of city space can be grasped quickly. Commercial 3D GIS software is useful for visualizing such a 3D city space model while referring to attribute information. However, such software is expensive and its use is restricted. For this study, highly extensible 3D modeling software is used to develop a technique for visualizing city spaces using its attribute information. Then the developed script is applied to an actual city model in Japan.