"When the street environment are evaluated, the visual impression is the most important. This paper reports on the some experiments on the assessment of various kinds of streets from the visual standpoint. The subjects were 24 Japanese students (12 males and 12 females). The 48 streets were selected from Japan and Europe and they were taken photographies as slides (2 or 3 scenes for each street ). The subjects were shown the slides and assessed them by Semantic Differential Technique. The 24 semantic differential items were selected from the words used as environmental descriptors. They are words concerning impression of the architectures, density of buildings, trees, passengers, noise and so on. The assessors rated each item on 34 seven-point scales. As the same kind of this experiment started in Germany, the 34 pairs of the words are originally German. But for Japanese subjects, they were translated into Japanese and in this paper furthermore into English. The results of this data were analysed as follows. The mean score on each scale was found for each street, and a scale-by-scale correlation matrix was used as input for a factor analysis. For the factor analysis the "Principal Component Solution" was used. Finally 4 factors were extracted. The first factor consists of more than 15 words concerning "Satisfaction", for instance, beautiful-ugly, comfortableuncomfortable, quiet-noisy, etc. In regard to the second factor "Familial ityll, the words familiar-unfamiliar, sharp-dull etc. are included. In the case of the streets in Europe, the distribution of variance of the first factor is 45 %. When the streets are woody and well kept, the assessors rate them as "satisfying" streets. On the other hand, •a street with many pedestrians or much traffic are assessed "uncomfortable"."