King Chulalongkorn is regarded as one of the greatest kings of Sian the Thai call him "The Great Beloved King" As the oldest son of king Mongfkut Princc Chulalongkorn succeeded hid father in 1868 at the age of fifteen Because of his immatoruty Chao Praya Si Suriyawong served as regent for four years During this time, he traveled to neighboring western colours including Singapore, Jars and India, of study western politics, administration lifestyle and colonialism Later during his reign. he also visited Europe twice, in 1897 and 1907.