his death in 1926. Parts of the palace (notably Nakseon-jae hall) continued to function as a royal residence up to 1989, when both Princess Deokhye and Crown Princess Bangja died. Other post-WWII residents included Empress Sunjeong (Sunjong's second wife), Crown Prince Yi Un, his son Yi Gu and Yi Gu's wife Julia Mullock. However, residence in the palace in the post-war period was at the whim of the republican leaders, and after the Korean liberation in 1945 it would take the resignation of Rhee Syngman for former imperial family members to be allowed back in. Today there are 13 buildings remaining on the palace grounds and 28 pavilions in the gardens, occupying 110 acres (45 hectares) in all and the area is designated as Historical Site No. 122. Buildings of note include Donhwamun (built in 1412, rebuilt in 1607, with a copper bell weighing 9 short tons or 8 metric tons), Injeongjeon (main hall), Seongjeongjeon (auxiliary office in the main hall), Huijeongdang (the king's private residence, later used as a conference hall), Daejojeon (living quarters), and Nakseon-jae. Structures The palace was built between Peak Maebong of Mt. Bugaksan in the back and River Geumcheon having flowing in the front influenced by the principle "baesanimsu" (배산임수, lit. 'back to hill, face to water') in Feng Shui theory. Contrary to Gyeongbokgung whose main buildings are arranged in accurate architectural principle, however, buildings in Changdeokgung are disposed more freely without a regular system. Though its structure seems chaotic at a glance, all buildings are in harmony with the environment surrounding them. Changdeokgung consists of governmental area (치조, 治朝, chijo) centering on Injeongjeon and Seonjeongjeon, royal private area (침전, 寢殿, chimjeon, meaning 'a house of king's bedroom'), Nakseonjae area in the east, and Huwon beyond the north hills. Most of major official buildings such as Injeongjeon, main hall of Changdeokgung, Seonjeongjeon, king's office, and many of government offices (궐내각사, 闕內各司, gwollaegaksa) are placed in the front parts of the palace, beyond which there are royal private court for king and queen. King's houses like Seonjeongjeon, Huijeongdang, and Nakseonjae are surrounded in many folds of buildings and courts in case any outsider break through. The architectural style of Changdeokgung overall features simplicity and frugality because of Confucian ideology. Structures of particular interest include: Donhwamun Gate – The main palace gate. Built in 1412, Donhwamun has a two-story pavilion-type wooden structure, and is the largest of