Tour the remains of Shuri Castle, the ancient palace of the Ryukyu Kingdom which prospered from the 15th century to the 19th century. Along with a wooden state palace that has been touted as the largest of its kind in the kingdom, you can see various valuable examples of architecture that have been registered as World Heritage sites.
A royal mausoleum that was built in the 16th century. Take a walk through the group of historic sites of the royal family. After the tour, take a break for lunch. Nearby, there is the popular café/restaurant Ashibiuna that was restored from an old Okinawan house. You can sample some of that Okinawan cuisine that can only be found locally.