Shimanto River
196-km river often called 'Japan's last clear stream' (no major dam blocks the main channel). 47 chinkabashi 'submerging bridges' built without railings to survive floods.
Open in Maps ↗Prefecture profile · 都道府県
Kōchi 高知県
Japan's most forested prefecture (84% forest), home to the Shimanto — often called Japan's last free-flowing river — the home prefecture of Meiji Restoration broker Sakamoto Ryōma, and the birthplace of the Yosakoi summer dance festival.
Capital
Kōchi City
Population
680,000
Area
7,103 km²
Region
Shikoku
History
Sakamoto Ryōma (1836–1867), born in Kōchi (then Tosa), was the rōnin who brokered the Satsuma-Chōshū alliance — the political deal that toppled the Tokugawa shogunate. Assassinated in Kyoto at age 31, he remains arguably the most popular figure in modern Japanese history; his statue overlooks Katsurahama beach.
Tosa Yamauchi clan ruled Kōchi from 1601 through the Meiji Restoration; Kōchi Castle (1611) is one of only twelve original-construction castle keeps surviving in Japan, and the only one whose original honmaru palace also survives.
The Yosakoi festival was created in Kōchi in 1954 to lift the prefecture's spirits after the war — combining traditional dance with naruko clappers. It has since franchised across Japan (most famously Sapporo) and abroad, but the August festival in Kōchi City remains the original.
Economy & business
Kōchi's prefectural GDP is around ¥2.4 trillion (US$17 billion) — among Japan's smallest. Forestry (84% of the land is forested, Japan's highest share), fisheries (Tosa katsuo skipjack is iconic), citrus (yuzu, ponkan), and a gradually growing rural-tourism economy along the Shimanto and Niyodo rivers.
Key industries
Forestry
Kōchi has the highest forest-cover ratio of any Japanese prefecture (~84%). Tosa cedar (sugi) and cypress (hinoki) supply the construction and craft markets.
Fisheries
Tosa katsuo (skipjack tuna) is the prefecture's signature catch; katsuo no tataki — straw-seared sashimi — is the dish every Kōchi visitor is expected to eat.
Citrus
Yuzu — Kōchi produces roughly 50% of Japan's total yuzu — plus ponkan, buntan, and the lemon-like naoshichi citrus.
Specialty agriculture
Greenhouse eggplant, ginger, and shōga production; Kōchi leads the country in ginger output.
Crafts
Tosa washi paper (one of Japan's three great washi traditions), Tosa uchi-hamono knives, and Tosa coral jewelry from the open Pacific reefs.
Notable companies
Kōchi BankShikoku Bank (Kōchi branches)Marunaka (Kōchi origins)Tosa Wagyu Co-opBankoku Pharmacy (Yosakoi origin sponsor)Tosa Washi Paper Co-op
Trade partners
ChinaSouth KoreaUnited StatesTaiwanThailand
Tourism highlights
Kōchi Castle
One of only twelve original-construction castle keeps in Japan, and the only one whose original honmaru palace also survives.
Open in Maps ↗Katsurahama beach & Sakamoto Ryōma statue
Pebble crescent beach with a 5.3 m bronze of Ryōma gazing out to the Pacific — pilgrimage site for Meiji-history fans.
Open in Maps ↗Cape Ashizuri
Shikoku's southernmost tip with cliff-edge lighthouse and Pacific views — temple #38 on the 88-temple pilgrimage.
Open in Maps ↗Niyodo River
Famous for 'Niyodo blue' — startlingly clear-blue water in the upper river canyons; swimming, SUP and waterfall hikes in summer.
Open in Maps ↗Hirome Market (Kōchi City)
Indoor food market with 60+ stalls; centrepiece is wara-yaki katsuo no tataki — bonito straw-seared in front of you.
Open in Maps ↗Did you know
Kōchi is the most forested prefecture in Japan — about 84% of its land area is covered in forest, higher than any other prefecture.
About 50% of Japan's yuzu is grown in Kōchi; if you've had yuzu kosho, ponzu, or yuzu sorbet in a Japanese restaurant, the citrus likely came from here.
Sakamoto Ryōma's bronze statue at Katsurahama beach stands 5.3 m tall and faces the open Pacific — a deliberate choice referencing Ryōma's 1860s vision of a navy and global trade for Japan.
About Kōchi — Frequently asked
What is the capital of Kōchi?
The capital of Kōchi is Kōchi City.
What region of Japan is Kōchi in?
Kōchi is part of the Shikoku region of Japan.
What are Kōchi's main industries?
Kōchi's key industries include Forestry, Fisheries, Citrus, Specialty agriculture.
What are the top tourist attractions in Kōchi?
Top attractions in Kōchi include Shimanto River, Kōchi Castle, Katsurahama beach & Sakamoto Ryōma statue, Cape Ashizuri.
What major companies are based in Kōchi?
Notable companies headquartered in Kōchi include Kōchi Bank, Shikoku Bank (Kōchi branches), Marunaka (Kōchi origins), Tosa Wagyu Co-op, Bankoku Pharmacy (Yosakoi origin sponsor).
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