Photographer's note: "No mortar was used, each block of stone is cut to fit the adjacent ones perfectly. The wall around the Emperor’s palace in Japan looks just like this, except it is not pressed coral stone as this is."
Nakagusuku, an old castle fortification erected during the 1400s by the local war lord Gosamaru, is one of almost 300 fortifications, otherwise known as gusuku, scattered across Okinawa, and has five sacred sites of worship inside the castle walls. Dr. Charles Gail most likely stumbled upon Nakagusuku because of its close location to an American fairground erected in the castle grounds at the time.
(Label by Nirupama Chandrasekhar, Cowell ’20)
Charles Eugene Gail, “"No mortar was used",” The Gail Project, accessed October 21, 2019, https://gailproject.ucsc.edu/items/show/32.