No. 078ShikokuKagawa

Marugame Castle

丸亀城

Original keep

Marugame’s compact wooden keep rises above imposing stone walls. The climb gradually reveals successive layers of sweeping masonry and the town stretching beyond the keep.

Marugame Castle keep above its high stone walls
Marugame Castle keep above its high stone wallsPhoto: Toto-tarou · CC BY-SA 3.0 · 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
Hill-and-plain castle on Mount Kameyama
Origins
Construction began 1597; surviving keep completed 1660
Builders & patrons
Ikoma, Yamazaki and Kyogoku clans
Other names
Kameyama Castle
What remains today
Edo-period keep, main gates and stone walls

THE STORY

The story behind the walls

The Ikoma clan began construction in 1597. After a period of abandonment, the Yamazaki clan rebuilt the stronghold. Under their successors, the Kyogoku clan, the present keep was completed in 1660. This wooden structure survives from the Edo period and is one of Japan’s twelve historic keeps. Alongside the gates and walls, it records work carried out across several periods.

LAYOUT & ARCHITECTURE

Read the landscape and the buildings.

Enclosures and stone walls rise with the hill towards the main enclosure. On the north side of Sannomaru, tall walls visibly steepen as they rise. The contrast between compact keep and enormous masonry reveals the scale of the castle beyond its buildings.

A CLOSER LOOK

Details worth a closer look.

01

Surviving three-storey keep

Completed in 1660, this keep is one of Japan’s twelve surviving historic keeps. Its compact profile contrasts with the great walls beneath it.

02

Fan-shaped wall curves

The north side of Sannomaru has curving stone walls more than 20 metres high. Follow the changing angle from the broad base to the steep upper edge.

03

Mikaerizaka slope

This steep approach leads from the main gates towards the hilltop. Pausing along it makes the change in height between gates and keep apparent.

THROUGH THE YEARS

A short timeline

  1. 1597

    The Ikoma begin construction.

  2. Seventeenth century

    The Yamazaki rebuild after abandonment.

  3. 1660

    The surviving keep is completed under the Kyogoku.

BEFORE YOU GO

A note before you go.

The approach includes steep slopes. Check official notices for any restrictions around wall restoration work.

Information checked: 27 September 2026

Sources & official information

Some official sources are available in Japanese only.