It has been 20 years since I began applying holograms to architectural spaces. Since then, a number of works, which are permanently installed in architectural spaces, have been created. However, some of my works had to be removed from their original places or moved to new places. This thesis is a report on three works that had to be moved from their original spaces to new ones. A change of location for works requires a special type of effort, which is required not only for art in general but also for holograms. This thesis will describe two different cases: the case in which the works were moved and installed without changing their original forms, and one in which the works were modified and re-installed.