Mie Castle

Mie Castle (Japanese: 三重城 Mie jō, Okinawan: 三重城 Mii gushiku) is a Ryūkyūan castle on Okinawa Island in Naha, Okinawa. It is one of two castles built to directly defend Naha Port.

History
Mie Castle was built during the reign of King Shō Shei, along with Yarazamori Castle, to defend Naha Port from hostile ships as part of the Greater Naha-Shuri defense network. It saw action against pirates numerous times in the centuries after it was built, and played a pivotal role in the defense of Naha during the 1609 invasion by Satsuma Domain. Today only the foundation of the castle remains, and a Japan Coast Guard watchtower stands in its place.