Asou Castle (Mikawa)




Asōjō was first built, it is said, by the Asō Clan in the late 14th century (also see Asōkojō). At that time it was located downstream on a hill to the northwest. In 1415, a coalition of local clans called the 'Nakayama Seven' which included the Asō Clan, came under the aegis of Matsudaira Chikauji. In 1429, Asō Kuranosuke became castellan of Asōjō. In the 1440s, Amano Kagetaka took over Asōjō. In 1487, Matsudaira Chikatada defeated Lord Kagetaka and destroyed Asōjō. Chikatada rebuilt Asōjō at this site, upstream and across the river from the old site. Chikatada made his son, Norikiyo, head of the Asō-Matsudaira Clan. Lords Chikamasa, Kiyofusa and Masatada followed as lords of Asōjō. The final lord was Lord Masakatsu, who perished during the Summer Siege of Ôsaka Castle in 1615. Asōjō was then abandoned and a mausoleum for the local Matsudaira clan members built over / near the site.

Visit Notes

Asōjō is a medieval hillside fortification ruin in Sakuragata Township, Okazaki Municipality. The upper hillside is terraced. On lower terraces are old stone walls; these were built for the Matsudaira Clan mausoleum in 1615 which remains on the site to this day.


Castle Profile
English Name Asou Castle (Mikawa)
Japanese Name 三河麻生城
Founder Matsudaira Chikatada
Year Founded 1487
Castle Type Mountaintop
Castle Condition Ruins only
Historical Period Pre Edo Period
Features stone walls
Visitor Information
Access I cycled from downtown Okazaki. 'Hello Cycle' bicycles are available to rent in Okazaki.
Visitor Information 24/7 free; mountain
Time Required 15 minutes
Location Okazaki, Aichi Prefecture
Coordinates 34° 59' 16.94" N, 137° 18' 11.30" E
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Added to Jcastle 2024
Contributor ART
Admin Year Visited Viewer Contributed
Friends of JCastle
Jōkaku Shashin Kiroku
Umoreta Kojō
Aichi Shiro

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