is one of the three royal mausoleums of the Second Shà  Dynasty of kings of the Ryukyu Kingdom, along with Urasoe yà Âdore at Urasoe Castle and Izena Tamaudun near Izena Castle in Izena, Okinawa. The mausoleum is located in Shuri, Okinawa, and was built in 1501 by King Shà  Shin, the third king (reigned 1477âÂÂ1527), to bury his father, King Shà  En a short distance from Shuri Castle. The Tamaudun complex was designated a National Historic Site in 1972. It was designated a World Heritage Site by UNESCO on December 2, 2000, as a part of the site group Gusuku Sites and Related Properties of the Kingdom of Ryukyu and a National Treasure in 2018.
The Tamaudun site, covering an area of 2,442 m<sup>2</sup>, consists of two stone-walled enclosures, the three compartments of the mausoleum itself facing north and backed by a natural cliff to the south. A stone stele in the outer enclosure memorializes the construction of the mausoleum, which was finished in 1501, and lists the name of Shà  Shin along with those of eight others involved in the construction. The three compartments of the mausoleum are laid out from east to west, with kings and queens in the eastern compartment and the princes and rest of the royal family in the western compartment, the central compartment used for the Ryukyuan tradition of '; remains would only be kept here for a limited time to allow for decomposition, after which the bones were washed and placed in urns. The remains of the king and his queen were placed in the east chamber, while those of the other royal family members were placed in the west chamber. The exterior of the structure is separated into an outer garden and a courtyard by a stone wall, and the courtyard is paved with coral fragments. The shisa (stone lions) guarding the tomb are examples of traditional Ryà «kyà «an stone sculpture. The architectural style of the mausoleum represents that of the royal palace at the time, which was a stone structure with a wooden roof.
The structure suffered extensive damage in the 1945 Battle of Okinawa, as it was located near the Japanese Supreme Commander's office, was caught in the crossfire of concentrated artillery fire along with Shuri Castle, suffering extensive damage, including the destruction of the east and west chambers. The ruins were subsequently looted, but the tombs and royal remains themselves remained intact, and much of the structure has since been restored. In 1992 Hiroshi Shà Â, the great-grandson of Shà  Tai, the last king of the Ryà «kyà « Kingdom, donated Tamaudun and the royal gardens of Shikina-en to the City of Naha.
Seventeen of the 19 kings of the Second Shà  Dynasty who ruled between 1470 and 1879 are entombed at Tamaudun, along with various queens and royal children. The first person to be buried there was Shà  En, for whom the mausoleum was constructed upon the orders of his son and successor, Shà  Shin. However, for approximately 25 years, Shà  En was not initially interred here, given that he died in 1476 and the mausoleum was not completed until 1501. Other monarchs not interred here include Shà  Sen'i (1430âÂÂ1477), who was not later re-interred here as his brother was, and Shà  Nei (1564âÂÂ1620) who chose to be interred separately in Urasoe yà Âdore in the aftermath of the Invasion of Ryukyu. The last interree was former Prince of Nakagusuku, Shà  Ten, the son of the Ryà «kyà « Kingdom's last king, Shà  Tai, who was entombed there in 1920 in accordance with traditional Ryà «kyà «an royal funerary rites, followed by his wife Shà Âko, Nodake Aji-ganashi, in 1931. Some of the identities of some corpses were still unknown, including a single corpse in Central Chamber that was speculated to be Mukuta Ufutuchi.