Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Changdeokgung Palace Complex' has mentioned 'Palaces' in the following places:
Occurrence Sentence Text Source
It is one of the "Five Grand Palaces" built by the kings of the Joseon Dynasty (1392xe2x80x931897).
It, like the other Five Grand Palaces in Seoul, was heavily damaged during the Japanese occupation of Korea (1910xe2x80x931945).
Changdeokgung was used as the secondary palace to Gyeongbokgung for 200 years, but after the palaces were burnt down during the Japanese invasion in the late 16th century, it was the first to be reconstructed and since then served as the main seat of the dynasty for 250 years.