Klai Kangwon Palace was the primary summer royal residence of King Bhumibol Adulyadej of Thailand. It is in Hua Hin District in Prachuap Khiri Khan Province. Commissioned by King Prajadhipok in 1926 and completed in 1933, the palace's main residence buildings are named Piam Suk, Pluk Kasem, Oep Prem, and Em Pridi.