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Osaka Castle

Japanese castle in Chūō-ku, Osaka, Japan

Architectural plans, a scale model, maps and brass measuring instruments
Places and architectureInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 12, 2026
Entity authorityQ321242
Source-derived summary

Osaka Castle (Japanese: 大坂城 or 大阪城, Hepburn: Ōsaka-jō) is a Japanese castle in Chūō-ku, Osaka, Japan. The castle is one of Japan's most famous landmarks and played a major role in the unification of Japan during the sixteenth century of the Azuchi–Momoyama period.

Layout

The inner keep of Osaka Castle is situated on a plot of land roughly one square kilometre. It is built on two raised platforms of landfill supported by sheer walls of cut rock, using a technique called burdock piling, each overlooking a moat. The keep is five stories tall on the outside and eight on the inside, built atop a tall stone foundation to protect its occupants from attackers.

A series of moats and defensive fortifications surrounds the main keep. The castle has two moats (an inner and an outer one). The inner castle moat lies within the castle grounds and consists of two types: wet (northern-easterly) and dry (south-westerly). The outer moat, meanwhile, surrounds the entire castle and denotes its outer limits, consisting of four water-filled sections, each representing a cardinal direction (North, East, South, West).

The castle grounds, which cover approximately 61,000 square metres (15 acres), contain the following thirteen structures that were denoted as "important cultural assets" by the Japanese government:

Ote-mon Gate

Sakura-mon Gate

Ichiban-yagura Turret

Inui-yagura Turret

Rokuban-yagura Turret

Sengan Turret

Tamon Turret

Kinmeisui Well

Kinzo Storehouse

Enshogura Gunpowder Magazine

Three sections of 'dobei' mud-and-plaster wall, all located around the Otemon Gate; each has its own Important Cultural Property status

There are also some megaliths at the castle, including the Octopus stone, but these have no cultural property status.

Editorial summary

The public source identifies “Osaka Castle” as japanese castle in Chūō-ku, Osaka, Japan. This brief keeps that definition visible, then builds a research path around Osaka, Castle and Japanese.

Editorial reviewA strong orientation record where physical form, institutional use and historical geography need to be read together. The current 268-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The linked authority record independently contributes the date 1583. Its value is orientation rather than verdict, with Osaka, Castle and Japanese providing the first useful test.
Editorial analysis

Why this record matters

A short description can identify a subject without explaining its stakes. For “Osaka Castle”, the useful work is to connect “japanese castle in Chūō-ku, Osaka, Japan” to the records capable of establishing context and consequence.

Evidence profile

Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated Sep 12, 2026. The linked authority identifier is Q321242. VIAF identifies the subject as 244717962. Authority coordinates are 34.687, 135.526. 3 of 8 selected statements include explicit references; 5 carry qualifiers and 1 use preferred rank.

Critical limits

A single description cannot reconcile every naming convention, rebuilding phase or administrative transfer associated with a place. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.

Best used for
  • Historic place names
  • Jurisdictional context
  • Routes into maps and plans
Verify next

Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.

Three-step research path

  1. Establish the record: confirm the title “Osaka Castle”, its source revision and the description used here.
  2. Expand the search: follow Osaka Castle primary sources, Osaka Castle archive and Osaka research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Osaka Castle”?
  2. What physical evidence or contemporary plan supports the description?
  3. Which earlier names or jurisdictions may reveal additional records?
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Source & attribution

This entry incorporates text from Osaka Castle” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.