Osaka Castle
MegalithicAsia
Massive granite megaliths in the castle walls, the largest weighing ~130 tons (the 'Octopus Stone' / Takoishi). Quarried from islands 60+ km away and moved across water without modern equipment in the early 1600s.
Look Closer — this site carries open questions: stones heavier than the period's tools could lift; stone harder than steel.
Open in the Atlas map →
Walkthrough videos (3)
The Enormous Megaliths of Osaka Castle in JapanAncient Architects
How Japanese Polygonal Megalithic Walls Differ from those in Peru?Curious Being
Pre-Historic Mega Structures of Japan (Osaka Castle section)Universe Inside You
Nearby sites
- Daisen Kofun14 km
- Koichi Kofun Cluster21 km
- Masuda no Iwafune34 km