Octopus stone

The Octopus Stone is a massive granite block at Osaka Castle with a natural surface pattern that resembles an octopus. Located near Sakuramon-masugata Square in the eastern section of the grounds, it sits prominently along the pathways visitors walk through.

The stone was brought and placed in 1624 under Ikeda Tadakatsu during the early construction phase of Osaka Castle. It was sourced from Inujima island, demonstrating the remarkable transport methods used by builders of that era.

The megalith stands as a representation of Japanese craftsmanship in stone transportation and placement during the early Edo period.

The stone is easily accessible near Sakuramon-masugata Square while exploring the eastern section of the castle grounds. No special arrangements are needed to view it, as it sits along the main pathways open to all visitors.

The stone's most distinctive feature is a natural depression in its lower left area that closely resembles an octopus shape. This accidental pattern makes spotting the likeness one of those small visual discoveries that visitors often enjoy during their walk.

GPS coordinates: 34.68097,135.52840

Latest update: December 12, 2025 08:01