Prachuab Khirikhan The sandy beach at the central part of the country where is located about 200 kms south of Prachuab Khirikhan Prachuab Khirikhan is the oldest beach resort in the Kingdom of Thailand and become popular as a rainy season retreat. The Thai Royal Family selected Prachuab Khirikhan to build the Klai Kangwon Palace, or literally "haven Far From Worries" and remains in frequent use by the Thai Royal Family today, rends this town an atmosphere quite different from other beach areas in Thailand.