Kaidō wo Yuku “On the highways” is a series of travel essays written by Ryotaro Shiba from 1971 until 1996. Shiba wrote the series with an intercultural perspective, making observations about the history, geography, and people of the places he visited. Though mostly about different areas of Japan, the series includes several volumes on foreign lands as well—China, Korea, the Namban countries (Spain and Portugal), Ireland, the Netherlands, Mongolia, Taiwan, and New York.