Nagiso, town in Kiso district, Nagano prefecture, Japan
Nagiso is a small town in the Kiso district of central Japan, set in a narrow valley carved by the Kiso River. The surrounding slopes are densely forested, and the river runs close to the main road and rail line that connect the town to the rest of the region.
Nagiso developed as a post town along the Nakasendo, a major overland route used during the feudal era to link the old capitals of Japan. The Kiso valley section of this route was known for its narrow gorges, and the town served travelers crossing this difficult terrain.
Nagiso sits in a valley where woodworking has shaped local life for generations, and small workshops still produce handcrafted wooden goods sold in local shops. Walking through the town center, visitors notice the close relationship between the built environment and the surrounding forest.
Nagiso is reachable by train on the Chuo line, which runs through the Kiso valley and stops at a small station in the town center. The area is best explored on foot, and autumn or spring are good times to visit when the forest cover on the surrounding hills changes color or comes back to life.
The village of Tsumago, which falls within Nagiso's boundaries, is one of the most complete surviving post towns on the old Nakasendo route. Cars are banned from its historic center, making it one of the rare places in Japan where the street layout and wooden buildings still look much as they did in the Edo period.
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