The Surijo Castle is in Okiniwa, Japan. This is a postcard of the gate that I purchased at the shop inside the castle grounds. It wasn't until later that day that I noticed that my camera settings had changed, and my photos of the gate (and other treasures inside the castle) were somewhat green. So please accept my apologies for the state of some of my future photos, they are not good, and no amount of photo shopping can fix them. Below is my photo of the gate. As you can see, quite green.