Phra Nakhon Khiri is the royal palace that His Majesty King Mongkut (Rama IV) pleased to build in 2402 B.E. consisting throne halls, royal villas and many buildings made of wood, bricks and cement. After the palace was finished for 24 years or in 2426 B.E., His Majesty King Chulalongkorn (Rama V) pleased to renovate entire palace with his intention to make it as a temporary home to take a rest and host his guests as well. That was the only first renovation and there were no more any other evidences of renovations after late 2426 B.E. Only some decorations and adaptations on Petch Poom Pai Rot throne hall were made in order to host his guests in 2453 B.E. And then, it was totally abandoned because of no visiting of royalty members since then. Till 2496 B.E., His Majesty King Bhumibol Adulyadej and Her Majesty Queen Sirikit personally visited there and saw the abandonment of throne halls and buildings lacking in maintenance. All became running down, going down in paints, molding, being covered with cyanobacteria with time. Some buildings remained only poles or walls, punctured roofs, decayed cements and some were eventually collapsed. So he had an idea to restore the palace as it was before.

Later, the Fine Arts Department has made the examination and recorded the palace for the considerable national historic site by March 8^th, 2478 B.E. Overall 3 peaks of the whole mountain were recorded in the historic site zone and some area were additionally delimited for another 20 meters from the foothill. Once they had received some budgets, the second renovation for some throne halls and buildings were greatly started. Eventually, the third renovation was proceeded in 2524 -2530 B.E. the Fine Arts Department has then presented a project plan to conserve arts and cultures in the 5^th National Economic and Social Development Plan under “ Phra Nakhon Khiri Historical Park Project ”. After the renovation had been finished, the promotion was offered to the palace as Phra Nakhon Khiri National Museum by the Fine Art Department on August 27^th, 2522 B.E. in kind of memorials. In addition, the government unfolded this project in order to honor His Majesty King Bhumibol Adulyadej in Royal Ceremony of Auspicious Occasion Commemorating on the 5^th Cycle Birthday Anniversary in December 5^th, 2530 B.E. and The Longest Reign Celebrations in July 2^nd, 1988. After all were done, His Majesty King Bhumibol Adulyadej pleased to have His Majesty King Maha Vajiralongkorn Bodindradebayavarangkun (His Royal Highness Crown Prince Maha Vajiralongkorn at that time) visited and opened Phra Nakhon Khiri Historical Park as well as put the relics in Phra That Jom Petch stupa in July 20^th, 2532 B.E.