This is the study for the "landscape foreignization" describes the perceptional and semasiological changes of humans "view" including body and mind, to their surrounding. This study is in the case of art installation in the open celling space of Osaka red cross hospital ward for inpatients. According to the result of the questionnaire survey, there were 3 difference types of the consciousness, "conscious", "no conscious" and " never conscious" to the open celling space before installation. And regardless of the difference of these consciousness, there was the impression and view change after installation to some extent. And spatial assessment to the open celling space after installation is increase with the decrease the consciousness to the open celling space before. And these difference of the consciousness before caused the difference of the condition of landscape foreignization. The condition of the landscape foreignization among For the group of "conscious" to the open celling space, it is the limited landscape foreignization depends on the image of installation.For the group of "no conscious", it is the comprehensive landscape foreignization depends on the rediscovering the space in addition to the image of installation.For the group of "never concious", it is the space specialized landscape foreignization depends on the first discovery the space caused by the installation.
