In tourism, it is necessary to promote sightseeing areas and tourist amenities as well as to encourage repeat visits by improving the tourists' levels of satisfaction. In this paper, we focus on impressions of sightseeing spots as an important factor in improving tourist satisfaction. Many studies have analyzed the relationship between tourists' impressions of a sightseeing area and their overall evaluation of that area, but few studies have focused on the tourists' first impressions. We analyzed the tourists' first impressions of each sightseeing spot in the area and investigated the relationship between these first impressions and the tourists' overall evaluations of each spot. Our results showed that first impressions contributed to the tourists' satisfaction and increased the tourists' motivation to revisit. We also discovered that first impressions could be significantly changed by altering the way in which tourists navigate between sightseeing spots and the way in which spots are combined.