Sunayama Beach on Miyako Island is a picture-perfect cove of soft white sand framed by turquoise waters, but its real showstopper is the natural rock arch that rises dramatically from the shore. This unique formation, sculpted over millennia by wind and waves, creates a striking contrast against the clear sky and sparkling sea, making it a magnet for photographers and nature lovers alike. It's one of Japan’s most photogenic coastal spots.