|English Name||Naka Castle|
|Alternate Names||Mashio-shi Yakata, Mashioshi-jo, Mashio-jo|
|Year Founded||Kamakura Period (1185-1333)|
|Castle Condition||Ruins only|
|Historical Period|| Pre Edo Period
|Access||Ogawamachi Sta. (Tobu Tojo Line) walk 10 mins.|
|Visitor Information||Park is open any time, but there is only one very small sign pointing out the castle.|
|Time Required||30 mins|
|Location||Ago, Saitama Prefecture|
|Coordinates||36° 3' 21", 139° 15' 18"|
|Visits||Feb 14, 2015|
Very little is known about the history of Naka Castle. It seems to have been around since the Kamakura Period (1185-1333) when it may have been a fortified home of Mashio Taro Tanenao. The fortifications you see here date to the Sengoku Period when it was an outer fortification of Koshigoe Castle.
The castle is basically one bailey surrounded by a large deep moat (trench) with an additional earthen embankment built up on the inside. The east side is split into two levels.
Situated on a small hill close to the station this castle is easy to visit. For a small castle site with little known history it has been preserved surprisingly well. It's a good site to visit for those interested in the development of early castles.