The Ancient Atlas

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.

34.6873°, 135.5262°

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 JapanThe Enormous Megaliths of Osaka Castle in JapanAncient ArchitectsHow Japanese Polygonal Megalithic Walls Differ from those in Peru?How Japanese Polygonal Megalithic Walls Differ from those in Peru?Curious BeingPre-Historic Mega Structures of Japan (Osaka Castle section)Pre-Historic Mega Structures of Japan (Osaka Castle section)Universe Inside You

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