Research from cultural psychology indicates that while selective attention to the focal object is predominant in North American cultures, East Asian adults have a tendency to jointly process objects and contextual information. Such cross-cultural differences also reflect in artistic expressions. The present study investigated weather children’s artworks of landscape would be mediated by culturally dominant perceptual styles. Participants were 559 children from grades 1-6 in Canada and in Japan. We focused on the horizon as a key concept that showed children’s understanding of spatial representations in two-dimensional medium. Our findings suggested that the emergence of understanding the concept of a horizon was similar among children in Canada and Japan. As we expected, however, children who understood the concept of the horizon showed culturally dominant patterns of performance observed in adults in their respective cultures. Implications will be discussed in relation to the development of culturally unique perspectives.