The ruins of Zakimi Castle are located in the central district of Okinawa Island, in Yomitan Village, close to the western seacoast. While the vast majority of Gusuku are built on Ryukyuan limestone hills that spread out in the central part of the island, one of the differing points of the Zakimi Castle ruins is that they are built on red earth named "Kunigami Ma-ji."

The Gusuku stands at an elevation of about 125 meters, offering a whole view from the Onnadake hills in the north to Motobu peninsula. To the west, the Kerama Islands can be seen floating in the East China Sea, and to the south, the entire central region. It has the perfect conditions necessary to be the location of a castle.

The ruins of Zakimi Castle are enclosed in two stone walls of differing heights. After entering through the first arched gate out front, a walled enclosure spreads out. In the depths is another arched gate and yet another higher wall widens out.
The castle walls zigzag like a Japanese folding screen and offer an exceptional view still today. The reason given as to why it stands today is related to the quality of the earth, as it supports a structure resistant to collapse. One of the advantages of the castle walls is that when this Gusuku became a battlefield, the top of the undulating walls could be used to attack the enemy trying to gain access. In the same way, from inside the second stone wall enclosure, if entering from the front on the left hand side there is a pathway that appears to lead to the depths of the Gusuku, but it actually takes one to a dead end. Of course it can be understood that the structure was constructed to add to the attack on the enemy from above the battle.

The walls are constructed from cut Ryukyuan limestone using both coursed "Nunodzumi" and fitted '"Akatadzumi" masonry techniques. The highest point of the walls is around 13 meters and the lowest point about 3 meters in height. The arched gates built into each of the outer and inner walls are estimated to be the oldest in the Ryukyus.