Shikina-en is the royal garden of the Ryukyuan royal family near Shuri castle in Naha, Okinawa. The Udun is the palace within the garden, though villa might be a better word. It is a World Heritage Site.
The Udun was constructed in the 17th Century with the garden being made later.
It has 15 rooms with the traditional red tile roof that was only allowed for the highest levels of the society.
As well as being used as a second residence, it was also used to entertain visiting dignitaries.
It was destroyed during the Battle of Okinawa and recontruction finished in 1995.