Japan

Ōmaruyama Kofun

Japan

Freely accessible

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ReferenceKulturenvanteri↗

The Ōmaruyama Kofun is a fourth-century tumulus situated in Kōfu, Yamanashi Prefecture in Japan's Chūbu region. Built during the Kofun period, it exemplifies the zenpō-kōen-fun type—a distinctive keyhole-shaped mound form characteristic of elite burial architecture in ancient Japan. Located in the Nakamichi neighborhood, the monument was formally designated a National Historic Site of Japan in 2013, recognizing its archaeological and historical significance.