From the earliest days of the dynasty, the rulers of Joseon endeavored to facilitate governance by producing comprehensive and accurate maps of the kingdom’s territory, particularly its network of roads. This “Complete Map of Korea” was created by one of the country’s greatest cartographers, Jeong Sang-gi, with the goal of enhancing public understanding of the national territory. The map, which is based on Jeong’s earlier “Map of Joseon,” has a scale of 1:42,000 and presents what was at the time the most accurate representation of the northern region. Precision was enhanced remarkably by an ingenious new scaling system that Jeong devised, known as the “100 ri cheok” scale (100 ri = 1 cheok). Another important feature of the map is the use of symbols to mark various geographical landmarks such as village walls, barracks, and naval bases. The map provides detailed travel routes for both land and sea, with the main routes marked in red.