SilkCode LibraryCastles of Japan
No. 096Kyushu & OkinawaMiyazaki

Obi Castle

飫肥城

Ruins & historic sites

Obi Castle is best understood alongside the Ito clan’s castle town. Its surviving walls and enclosures are accompanied by a modern reconstruction of the main gate.

Ote Gate and stone walls at Obi Castle
Ote Gate and stone walls at Obi CastlePhoto: ja:User:Sanjo · Public domain · Resized and converted to WebP. Cards crop the display.This photograph shows the site at the time it was taken. Check the notes and official sources for current restoration work and access.

Get to know the castle

Castle at a glance

Site & layout
Castle divided by dry moats on a volcanic-ash plateau
Origins
Medieval origins; new main enclosure completed 1693
Builders & patrons
The Shimazu and Ito clans
Other names
—
What remains today
Enclosures, walls and dry moats; reconstructed gate and interpretive Matsuonomaru residence

THE STORY

The story behind the walls

The Shimazu and Ito clans contested Obi during the Sengoku period. From the late sixteenth century it developed as the Ito seat alongside its castle town. Repeated seventeenth-century earthquakes damaged the ground of the old main enclosure. A new main enclosure was consequently completed in 1693. Modern interpretation added Otemon Gate in 1978 and Matsuonomaru in 1979, complementing the ruins and town.

LAYOUT & ARCHITECTURE

Read the landscape and the buildings.

The castle divides a volcanic-ash plateau into enclosures separated by dry moats. Earthquake damage led to relocation of the main enclosure, so its layout records more than one phase. Today’s gate and Matsuonomaru are modern additions; the latter uses comparative research to interpret a residence without surviving original plans.

A CLOSER LOOK

Details worth a closer look.

01

Reconstructed main gate

The present Otemon Gate was reconstructed in 1978. It is a modern reconstruction of the entrance, not a surviving Edo-period gate.

02

Enclosures on a plateau

Dry moats divide the enclosures on a volcanic-ash plateau. Compare the level enclosures with the cuts separating them.

03

Matsuonomaru residence

Built in 1979, this residence interprets a palace for which original plans have not survived. It draws on Edo-period architecture and should be distinguished from an exact reconstruction of the lost palace.

THROUGH THE YEARS

A short timeline

  1. Late sixteenth century

    Develops as the Ito seat.

  2. 1693

    A new main enclosure replaces the earthquake-damaged one.

  3. 1978

    Otemon Gate is reconstructed.

  4. 1979

    The Matsuonomaru residence is built.

BEFORE YOU GO

A note before you go.

The ruins and castle-town buildings have different visiting arrangements. Check the Nichinan tourism association’s facility information before visiting.

Official visitor information ↗Find it on a map ↗

Information checked: 27 September 2026

Sources & official information

Some official sources are available in Japanese only.

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