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Kasugayama Castle

新潟県

National Historic Site — the mountain stronghold from which Kenshin directed five Kawanakajima campaigns and ruled Echigo.

Founded

1507

Type

Castle

Visited

Want to go

Access

40 min walk from JR Kasugayama Station

Nakayashiki, Joetsu, Niigata

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Info

Castle

Founded 1507

519 years

Overview

The ruins of Kasugayama Castle in Joetsu City—home base of Uesugi Kenshin—are a National Historic Site and counted among Japan's five great mountain castles. An impregnable mountain fortress that skillfully exploited the natural terrain of Mt. Kasugayama at approximately 180 meters elevation, Kenshin directed his five battles at Kawanakajima and his campaigns into the Kanto region from here. As th…

Origins

Kasugayama Castle is said to have been built around 1507 by Nagao Tamekage, the deputy military governor of Echigo Province, making full use of the rugged natural terrain of Mt. Kasugayama at approximately 180 meters elevation. Around 1548, Tamekage's son Nagao Kagetora—later known as Uesugi Kenshin…

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Related Articles
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Uesugi Kenshin and Kasugayama Castle: Walking the Base of the Warrior of Justice

Uesugi Kenshin, who fought under the banner of justice, ruled from Kasugayama Castle in Echigo Province (present-day Niigata Prefecture). This article traces his life through five historic sites including the castle ruins, Rinsen-ji temple, and Kasugayama Shrine.

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Death Poems of the Sengoku Warlords: Words Left at the Moment of Death

Examining the death poems of five Sengoku warlords — from Uesugi Kenshin's Chinese verse to Toyotomi Hideyoshi's haiku and Hosokawa Gracia's waka — through primary sources, separating authentic records from later fabrications, with guidance for visiting associated sites.

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Untoan and Uesugi Kenshin: The Zen Temple That Shaped the Dragon of Echigo

Untoan in Minamiuonuma City is the Soto Zen temple where Uesugi Kenshin spent his boyhood, earning the proverb "Have you tread the soil of Untoan?" Its vermilion gate and stone-paved approach preserve the atmosphere of the Sengoku warlord's formative years.

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もっと詳しく · 2

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Related Figures
— 2

Uesugi Kenshin

Dragon of Echigo, God of War

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Kasugayama Castle was Kenshin's enduring stronghold, a mountain fortress that exploited the natural terrain to devastating defensive effect. From here the 'Dragon of Echigo' conducted five campaigns against Takeda Shingen and repeated forays into Kanto, earning his reputation as one of the Sengoku era's supreme commanders. The castle remained the Uesugi seat until their transfer to Aizu in 1598.

Naoe Kanetsugu

The Great Administrator of Uesugi Who Bore the "Love" Helmet

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Kasugayama Castle was the Uesugi clan's principal mountain stronghold since the days of Uesugi Kenshin, and it was here that Kanetsugu grew up in close attendance on Uesugi Kagekatsu, developing the skills that would define his career. During the Otate no Ran succession war of 1578-79 he helped secure Kagekatsu's victory with the castle as their base, taking his first step toward becoming the clan's chief administrator.

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Visiting Information

Hours

The mountain castle ruins themselves have no fixed hours and are freely accessible. The Kasugayama Castle Ruins Story Hall at the foot of the mountain is open 9:00 AM–4:30 PM, closed Mondays (following day if a holiday) and during winter (Dec–end of Feb).

Admission

Free to visit the castle ruins; the Story Hall museum is also free.

As of 2026-07-17. Subject to change.

Also Worth Visiting

Kasugayama Shrine

A sacred shrine where Kenshin, the warrior of righteousness, is enshrined as a god — armored processions revive his legend each spring.

86m

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Rinsenji Temple

The bodaiji where seven-year-old Kenshin learned righteousness and Zen — its nationally treasured gate still stands in majestic dignity.

443m

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