Hoang A Tuong Palace was built in 1914 and completed in 1921. The construction was made by Hoang Yen Chao of the Tay ethnic group, the father of Hoang A Tuong. The whole area is 1000m2 with the walls surrounded by solidly. During the years 1905-1950, Hoang Yen Chao Company occupied fertile land, monopoly business. Based on economic potential, Hoang Yen Chao has built a magnificent mansion to show his wealth and authority. Later on, Hoang A Tuong grew up living with his wife in the mansion, and is said to be the residence of the Cat King or the Hoang A Tuong Citadel.