Guide
Nagashino Castle is a National Historic Site situated in Shinshiro City, Aichi Prefecture. It played a pivotal role in the Sengoku (Warring States) period, most notably as the stage for the Battle of Nagashino in 1575. Today, the site serves as a highly valuable historical monument where visitors can witness the defensive structures of the era, including massive earthworks and moats that demonstrate the strategic importance of this location.
The history of Nagashino Castle dates back to 1508, when it was established by Kagenuma Motonari. The site served as a vital transport hub connecting the Mikawa, Nagano, Shizuoka, and Gifu regions via land and water. Throughout history, the area shifted between the control of powerful clans, including the Imagawa, the Matsudaira (later the Tokugawa), and the Takeda. The Battle of Nagashino in 1575, fought between the Takeda forces and the Oda-Tokugawa alliance, remains one of the most significant events in Japanese history, profoundly shaping the nation's future. The castle was later expanded to enhance its defensive capabilities, and the remains are now carefully preserved as a historical site.
The most striking feature of Nagashino Castle is the way it utilizes the natural terrain for defense. The designated historical area covers approximately 35,500 square meters around the Honmaru (main enclosure) site, where massive earthworks and giant moats still remain. Notable features include the 'Yokoya-gake' (sloped embankments) in the northeastern part of the main enclosure designed for flanking fire, the depressions of the Noyu-kuruwa (watchtower site), and ancient wells, all of which showcase advanced fortification techniques of the time. A unique sight is the Iida Line railway tracks, which run directly atop the historical earthworks, creating a fascinating blend of the ancient and the modern.
The Nagashino Castle ruins offer an open, airy space surrounded by nature. During the daytime, the sunlight makes it easy to clearly identify the shapes of the earthworks and moats, making it an ideal time for studying the historical structures. The surrounding lush greenery changes beautifully with the seasons, offering a peaceful atmosphere for a stroll. We recommend visiting during daylight hours when visibility is at its best for exploring the terrain.
Visitors can enjoy walking through the vast grounds to trace the very terrain where great battles once took place. By seeing the massive earthworks and moats up close, you can truly feel the defensive technology of the Sengoku period. Additionally, the surrounding area is dotted with various historical sites related to the Battle of Nagashino, allowing for a deep, immersive journey through Japanese history.
There are many historical facilities near the castle ruins. The 'Nagashino Castle Site Preservation Museum' is the center for research and preservation of the Battle of Nagashino, offering exhibits that explain the battle and the castle's structure. Other nearby spots, such as Iou-ji Temple (related to the Takeda clan) and the monument of Torii Saemon, provide a complete picture of the historical events that shaped this region.
Because the site is located within a natural landscape with uneven terrain, including earthworks and unpaved paths, we strongly recommend wearing comfortable walking shoes. While the site is an open-air space, please respect the environment and maintain a quiet atmosphere.