- Built: 724
- Japanese: 多賀城 (Taga jou)
Taga-jô was an early stockade fortress located in the plains to the northeast of Sendai. It watched over an area extending from flatlands about 4 meters above sea level, to hills 50 meters high.
The area of the "castle" was around 900 meters square, and was encircled by earthworks and wooden stockades forming an irregular rectangle. At the center of this wide area was a set of administrative structures covering about 100 square meters. These included both offices and soldiers' barracks.
- Gallery labels, "Tagajô Castle (Miyagi)," National Museum of Japanese History (Rekihaku).