Tamaudun is the royal mausoleum for the Second Sho Dynasty. It was reportedly constructed to house the remains of Sho En, the father of the third king of the Second Sho Dynasty, Sho Shin, who moved his father's remains there after construction. This was in September 1501, Sho Shin's 25th year. After construction generations of royal family were entombed here, but these were destroyed in the Battle of Okinawa. Tamaudun was restored in 1972, and in conjunction with the reversion of Okinawa to Japanese sovereignty was designated an Important National Cultural Property and National Historical Monument.