This work by https://www.swantower.com is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
If you go to Okinawa, Shuri-jou is one of the top sites you’re likely to visit: a castle dating back to the Kingdom of Ryukyu, before the islands were made part of Japan. (Well, the reconstruction thereof. Like most things in Okinawa, it got bombed to oblivion in World War II.) The style of it is highly unusual, being strongly influenced by China, but also kind of its own thing.
No, I have no idea why the courtyard is stripey. 😛