Tiled Manhole Cover in Kawaguchi City Japanese manhole covers aren't everyone's idea of typical Japanese art, but they're certainly worth discovering. Creative and unique sewer covers can be found in most of Japan's 809 cities and 47 prefectures, drawing "manholers" to each corner of the country to see them. Each manhole design has been chosen to represent a certain aspect of the area in which it's located, whether that be the environment, the history and traditions, or the people. Some towns even have several different designs in the same city; you can go on your own art tour from street to street! Photo by 47Regions