Tonogayato Garden (殿ヶ谷戸庭園 Tonogayato Teien?) is a traditional Japanese garden located in Kokubunji, Tokyo. Its name comes from the region's old name, Tonogayato, Kokubunji village. The garden covers an area of 21,124 m2.
The garden was laid out between 1913-15 in the grounds of a villa built for Eguchi Teijo, the Vice-President of the Manchurian Railway, who was a senior director of the Mitsubishi group. In 1929, the garden was purchased by the founder of Mitsubishi, Iwasaki Yatarō, who completed it as a circular style garden with a tea house. It was used as a villa for the Iwasaki Family. In response to a plan to develop the area for other uses, local residents started a campaign to preserve the garden. The Tokyo Metropolitan Government eventually purchased it in 1974 and opened it to the public in 1979. In 1998, the Tonogayato Garden was designated as a Place of Scenic Beauty by the Tokyo Metropolitan Government.
The garden is centered around a pond and uses the natural terrain of the Musashino Plateau by incorporating the valleys found in the terrace cliffs into its design. The highlight is the strikingly different types of landscape: a scenic spacious lawn on the top, steep slopes, a pond with waterfalls and bamboo forest at the bottom. There is a depression in the pond containing a natural spring called Jiro Benten that provides large quantities of fresh water. Water that runs off the cliff is a part of the source of the Nogawa River. A tea house called Koyo-tei is also situated in the gardens.
A wide variety of flora and fauna can be found in the garden, including a variety of plants that flower through the course of the year: shibateranthis pinnatifida, dogtooth violet, cypripedium japonicum, cephalanthera erecta, bellflowers, fragrant goldband lily, false anemone, orange spider lily and toad lilies. Japanese ternstroemias are the most prevalent species of tree in the gardens, due to Koyata Iwasaki's fondness for the tree.
- "Tonogayato Teien (Garden)". Tokyo Information Net. Retrieved 2011-06-27.
- "都立殿ヶ谷戸庭園【都名勝・都名湧水】". Kokobunji City. Retrieved 2011-06-27.
- "Tonogayato Gardens: Outline". Tokyo Metropolitan Park Association. Retrieved 2011-06-27.
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- "Tonogayato Gardens". Tokyo Bureau of Construction. Retrieved 2011-06-27.
Media related to Tonogayato Garden at Wikimedia Commons