The Japanese fortresses left in Korea are black boxes that contain the records of the Korea-Japan War known as Imjinwaeran, which took place about 420 years ago. There are numerous Japanese fortresses left in the Korean peninsula along the southeastern coastlines, beginning from Busan to Ulsan and Yeosu in the South Jolla Province. These fortresses show us the architypes of the fortresses built in traditional Japanese architectural styles, which are hard to find even in Japan today. Despite their historic and cultural values, these fortresses have been neglected and mistreated because people consider them as nothing more than relics that represent the scathing history about the Japanese invasion of Korea. Black Box of History: Rediscovery of Japanese Fortresses Left in Korea guides you through the 31 Japanese fortresses that remain in Korea today, and shed new light on Imjinwaeran from a modern perspective.