This paper examines the contents of Koji Fujii’s visit to Europe and the United States and its impact on his later design activities. As a result, the following points were clarified.
1. About two months of staying in New Jersey and visits to about 40 equipment manufacturers had a major impact on his subsequent activities.
2. Fujii was not very interested in the new architectural design of the same era.
3. The experience of visiting Europe and the United States influenced the attitude of conducting research using his own house and presenting the research results as an actual house.
