Osaka Castle's Takoishi is about 5.5×11.7 metres and estimated at 108 tons—the largest single stone in a Japanese castle wall. Named for an octopus-shaped pattern that appears on its surface in rain, it was set in 1624 during the Tokugawa reconstruction meant to replace the Toyotomi legacy. The video argues that its markings resemble those on other regional megaliths. 🐙
Osaka Castle's 108-ton Takoishi is Japan's largest castle stone
JapanArchitecture
Site mentioned
Key facts
- The Takoishi (Octopus Stone) is about 5.5 metres high and 11.7 metres wide, with an estimated weight of 108 tons.
- It is described as the largest single stone used in a Japanese castle wall.
- Its name comes from an octopus-shaped pattern that appears on its surface in the rain, rather than a small carving.
- It was set in the wall in 1624 during the Tokugawa reconstruction of Osaka Castle between 1620 and 1628, replacing the Toyotomi-era complex.
- The video argues that markings on the stone resemble those found on other megaliths in the region.
- The original Toyotomi castle was completed in 1597 and fell to the Tokugawa in 1615.
Sources
Osaka Castle's Mysterious Giant Stonesmuza-chan.net
Tako-ishi, the "Octopus Stone", the largest stone in the Osaka Castle, measuring over 59 square meters in surface area, 108 tons in weight, ...
The Stone Walls of Osaka Castle | October 2021gov-online.go.jp
It is 5.5 meters high, 11.7 meters wide and weighs about 108 tons. The stone wall on the east side of the central core is 34 meters high measuring , “The wall ...
Osaka Castleen.wikipedia.org
Osaka Castle is a Japanese castle in Chūō-ku, Osaka, Japan. The castle is one of Japan's most famous landmarks and played a major role in the unification of ...
Famous Castles in Japan - NIPPONIAweb-japan.org
One of the huge boulders for the main enclosure wall is 5.8 m tall and 14 m wide (it is called tako-ishi ). The castle was burned in 1615 when the Toyotomi ...
Osaka Castle: Japan's Most Visited Castlenippon.com
The tako ishi inside the Sakuramon Gate is Osaka Castle's largest, with a surface area of roughly 60 square meters and weighing an estimated ...
蛸石 | 大阪城のガイドkojodan.jp
正面の石は蛸石【たこいし】とよばれる城内第1位の巨石で、表面積がおよそ36畳敷（59.43平方メートル）、重量は約108トンと推定される。向かって左手の ...
城内第一位の「蛸石」 | 工事日報ブログapplion.co.jp
蛸石の表面積は約36畳、重量は108トンもあるそうです。当世のクレーンで持ち上げるとしても、結構大変かもしれません。 これらの巨石は薄い板状（厚 ...
487 大阪城公園 蛸石expo2025.or.jp
高さ5.5メートル、幅11.7メートル、重さ約108トンにもなります。「蛸石」の名前の由来として、雨が降ると表面に蛸の姿が浮かび上がるからと言われていますが、 ...
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