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Daisen Kofun

Well knownIn most guidebooks for this region — but rarely with the practical detail.

調查與撰寫 Hinato

Daisen KofunEmperor Nintokuancient tombUNESCOarchaeology

Illustration of Daisen Kofun, 大阪府 — 示意插圖（非實景照片）

Daisen Kofun (大仙古墳), also known as Emperor Nintoku's Tomb, is the world's largest tomb by area — a 486-meter keyhole-shaped (前方後円墳) burial mound from the 5th century CE. The tomb is surrounded by three moats and forests, creating a 47-hectare complex visible from above as a distinct keyhole shape. The tomb is a UNESCO World Heritage Site (2019) as part of the Mozu-Furuichi Kofun Group.

The tomb's interior is sealed and has never been archaeologically excavated (Imperial Household Agency prohibits excavation of imperial tombs), leaving its contents and exact construction date mysterious. Visitors cannot enter the tomb grounds but can walk the perimeter and view from observation platform.

基本資訊

營業時間

Tomb perimeter walk: always accessible | Sakai City Hall observation deck: 9:00 AM – 9:00 PM

公休: Tomb perimeter: never closed | City Hall observation deck: closed Dec 29–Jan 3

門票

Free | Kofun cycling route: bicycle rental ¥300/day (Mozu Station)

最佳季節

Year-round | Spring for moat reflections and greenery

建議停留

45–60 minutes (perimeter walk + observation deck) | Half day for kofun cycling route

如何前往

交通資訊

Daisen-cho, Sakai Ward, Sakai City. Near Mikunigaoka Station (JR). Free to walk perimeter. Observation platform (nearby Sakai City Hall 21F): free, 9:00–21:00. Visit duration: 45–60 minutes for perimeter walk + observation deck. Bicycle rental available nearby for wider kofun area exploration.

在地私房情報

**Keyhole tomb significance:** Kofun (古墳, 'old tomb') period (250–538 CE) saw construction of massive keyhole-shaped burial mounds for emperors and nobility. The keyhole shape (round rear section connected to trapezoidal front section) is unique to Japan and symbolizes connection between divine realm (circle) and earthly realm (square). Daisen Kofun's scale (486m length) surpasses Great Pyramid of Giza by area (though much shorter at 35m height). **Ground-level limitations:** The tomb's scale is impossible to perceive from ground level — walking the perimeter (2.8km circumference) feels like walking next to a forested hill with moats. The keyhole shape is only visible from aerial views. The Sakai City Hall observation deck (4km away) provides distant overview but detail is lost. For true appreciation, view aerial photos/videos before visiting to mentally visualize what you're walking around. **Kofun cycling route:** Sakai City has 100+ kofun burial mounds concentrated in the Mozu area. Rent a bicycle at Mozu Station (¥300/day) and follow the Kofun Cycling Road (10km route) passing 20+ kofun of various sizes. The route includes Richu Kofun (365m), Nisanzai Kofun (300m), and small kofun accessible on foot. Allocate half-day for full kofun cycling experience.

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