Japan

Otsuka Kofun

Japan

Freely accessible

Public space — no opening hours to check.

Strollie cannot guarantee access — always check before you travel.

Otsuka Kofun is a zenpō-kōen-fun (keyhole-shaped burial mound) constructed in early fifth-century Japan, around 401 CE. This monumental funerary structure exemplifies the distinctive keyhole form characteristic of Kofun-period architecture, combining a circular mound with a rectangular platform to create the recognizable silhouette. Built during an era when such massive earthworks dominated the Japanese landscape, Otsuka Kofun represents the sophisticated engineering and social organization required to create these impressive tumuli, which served as the burial places of the period's elite and powerful figures.