The stone laying techniques used in the construction of Nakagusuku Castle can be divided into 3 categories: the Nozura technique (Rubble masonry), the Nunozumi technique (Ashlar masonry) and Aikata Tsumi technique (Ashlar masonry).
The Nozura technique : South Enclosure
Designates stones that have not been processed. Natural stones and rocks are simply laid on each other. This is the oldest stone laying technique.
The Nunozumi technique (also known as Tofuzumi technique) : First Enclosure, Second Enclosure
Cubical stones are laid such an order that each layer presents the same height.
Big stones are a must because they make the wall very solid. This technique has been used to make the parts that surround the castle gates.
The Aikata technique (also referred as Turtleback technique) : Third Enclosure, North Enclosure
With this technique, stones are processed into different shapes in order that the stones fit into each other. Because of this process, the wall remains solid and will last for a longer period of time. This technique can be seen at the north enclosure and the three enclosures that face the rear gate which is thought to have been constructed by Lord Gosamaru in the Shotaikyu era (1454 to 1460).