In 1860 was completed, on top of a mountain, Phra Nakhon Khiri, as a summer palace for King Mongkut (Rama IV). Because over time was found that the palace experienced problems during heavy rains, in 1909 King Chulalongkorn the Great (Rama V) bought a piece of land on the Petchaburi river, just a few kilometers away from Phra Nakhon Khiri, and ordered to build another palace there.
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