Manwoldae
Kaesong, North Korea · built 919
Manwŏltae (Hanja, lit. 'Full Moon Platform'), or Mangwŏltae, was the main palace of the Goryeo Dynasty of Korea. It did not have an official name, such as "Gyeongbokgung" (the main palace of the Joseon Dynasty), because it was an imperial palace like the imperial palaces of China (e.g. "", ""). Located in the Goryeo capital of Kaesong (now in North Korea), the palace was burned in 1011, 1126, 1171, 1225, and 1362. The name "Manwŏltae" was given to the ruins of the palace during the 14th or 15th century of the Joseon period.
Palace data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).