Khao Kor Palace is located at Khao Ya, Tambol Thung Samor. Lt. Gen. Pichit Kullawanichaya, commanding General 1 st, and Mr.Jamnien Pativethwanakij, Governor of Phetchabun in the past, cooperated to construct Khao Kor Palace for the purpose of presentation to His Majesty the King who will reside here while observation His Majesty the King's project and visiting population in Phetchabun and nearby provinces. Khao Kor Palace is one floor building, it was built in semicircle shape and in touch. Only the King's bedchamber side was built 2 floors
Rather, the name "Khao Kor" is long-time known of Switzerland liked atmosphere, no matter its fresh and cool weather and the pristine scenery whenever visitting.
One of the reason to popularity of Khao Kor is its well arrangement of the accommodation , either natural style or Thai classical style, the delicious and the reputed passion juice.
Khao Kho is made up of mountain ranges to northwest of town about 1,174 metres above mean sea level covered in the main by deciduous plants. Very cold during November-February, it once was the base room which communist insurgents conducted their struggles against the authorities during 1968-1982. Today it is accessible via two routes; off Highway No. 12 (Phitsanulok - Lom Sak) at Ban Camp Son with a further distance of 30 kilometres of off highway No. 21 at Ban Na Ngua, about 13 kilometres from town with a further distance of 30 kilometres. Both routes wind through considerably steep terrain. Interesting places include various viewing points, remains of communist bases and buildings, war memorial, arms museum, a Chedi containing Holy Relic and the Si Dit waterfall.