Agematsu (上松町), Nagano
Agematsu is a small and scenically spectacular mountain town located in Kiso District in Nagano Prefecture, sitting in the narrow Kiso Valley along the banks of the Kiso River surrounded by the soaring peaks of the Central Alps to the east and the Kiso Mountains to the west. It is a town of extraordinary natural beauty, deep forestry heritage, and important historical associations that make it one of the most rewarding and least visited destinations along the famous Kiso Valley route through the mountains of central Nagano.
The town occupies a dramatic position within the Kiso Valley, one of the most scenically spectacular river valleys in the Japanese Alps, where the Kiso River flows through a narrow gorge of considerable geological and natural power between the steep forested mountain walls that rise on both sides to considerable heights. The combination of the river, the mountain forest, and the clarity of the mountain air creates a natural environment of remarkable purity and visual intensity.
Agematsu is most famous as the gateway to Akasawa Natural Recreation Forest (Akasawa Shizen Kyuyochi), widely regarded as one of the three most beautiful forests in Japan alongside Aokigahara near Mount Fuji and Yakushima. This extraordinary forest of ancient hinoki (Japanese cypress) trees has been managed as a protected forest since the Edo period and represents one of the finest and most atmospherically beautiful examples of traditional Japanese forestry culture surviving in the country.
The Akasawa forest was designated as one of Japan's most important timber reserves during the Edo period by the Tokugawa Shogunate, which imposed strict regulations on the cutting of hinoki cypress and other valuable timber species in the Kiso forests to ensure a sustainable supply of the high-quality wood required for the construction and maintenance of Edo Castle and other important shogunal buildings. The phrase "cut one tree, plant three" was the governing philosophy of this remarkable early forestry conservation program.
The ancient hinoki cypress trees of the Akasawa forest are among the most magnificent and atmospherically beautiful living organisms in the Japanese Alps, their straight silver-grey trunks rising to extraordinary heights through a forest floor carpeted in deep green moss and the accumulated organic material of centuries of undisturbed forest succession. Walking through the Akasawa forest is an experience of profound natural beauty and contemplative stillness that is unlike almost any other forest environment in Japan.
The Akasawa Forest Railway (Akasawa Shizen Kyuyochi Toroko), a narrow-gauge railway operating within the forest recreation area, carries visitors through the ancient hinoki forest on a scenic journey of approximately 2 kilometers through some of the most beautiful sections of the protected forest. The slow pace of the small railway train through the ancient trees, with the sounds of the forest surrounding the open carriages, creates one of the most enchanting and memorable short railway experiences available in the Chubu mountain region.
The Kiso River flowing through Agematsu is one of the most important and historically celebrated rivers in central Japan, designated as one of Japan's Three Raging Rivers (Nihon Sankaidai Kyuryu) alongside the Tone River and the Chikuma River. The river's powerful flow, its clarity, and the dramatic gorge scenery it creates through the Kiso Valley have made it one of the most admired and artistically celebrated rivers in Japanese landscape tradition.
The Nezame no Toko (Sleeping Beauty's Bed) gorge, located along the Kiso River within the Agematsu town area, is one of the most extraordinary and photogenic natural geological features in the Kiso Valley. The gorge features massive white granite boulders smoothed and sculpted by the river into extraordinary rounded forms that sit within and beside the crystal-clear river water in a composition of remarkable natural sculptural beauty.
The name Nezame no Toko derives from a legend associated with the famous Urashima Taro folktale, in which the protagonist is said to have awakened (mezameta) from his long enchanted sleep at this location. The legendary associations of the site add a layer of mythological resonance to an already extraordinary natural landscape that has been celebrated in Japanese poetry and visual art since the Heian period.
The Nakasendo historic highway passed through the Kiso Valley and the Agematsu area, making the town one of the post towns on this famous mountain route connecting Edo to Kyoto through the interior of central Honshu. The historic associations of the Nakasendo add a layer of travel culture heritage to the natural and forestry heritage that defines Agematsu's primary identity, and several historical markers and preserved sections of the original highway are visible within the town area.
The broader Kiso Valley accessible from Agematsu contains several of the most celebrated and beautifully preserved Nakasendo post towns in Japan, including Magome-juku and Tsumago-juku to the south and Narai-juku to the north, all of which are easily accessible as part of a broader exploration of the Kiso Valley historical and natural heritage. The combination of the ancient forest, the dramatic river scenery, and the historic post town culture of the valley creates one of the most comprehensively rewarding mountain region tourism circuits in the entire Chubu area.
Agematsu is served by Agematsu Station on the JR Chuo Main Line, connecting to Nagoya in approximately 1 hour 40 minutes by limited express train and to Matsumoto in approximately 1 hour. From Tokyo, the journey via Matsumoto on the JR Azusa limited express from Shinjuku takes approximately 2 hours 30 minutes to 3 hours total, making Agematsu and the extraordinary Akasawa forest accessible as a substantial day excursion or overnight stay from the capital.
