In the past the area of Wichian Buri was administered by
Mueang Tha Rong. King
Rama III upgraded the status of Tha Rong city by amalgamating Bua Chum and Chai Badan and changed the city name to be Wichian Buri. When King
Rama V created
Monthon Phetchabun, Wichian Buri became a subordinate of Phetchabun in 1898. The name of the district was changed to Tha Rong on 17 April 1939, but changed back to Wichian Buri in 1944. The name
Wichian Buri literally translates to "crystal city" or "crystal town", the first element
Wichian in Thai means "crystal" or "diamond", the second element
Buri from
Sanskrit purī (पुरी); meaning "town" or "city". Its name is based on the name of a local mountain, Khao Thamorat.
Thamo (ថ្ម) is
Khmer; meaning "mountain" or "stone", and
rat is an abbreviation of
rattana (รัตนะ, ); meaning "crystal", hence named it accordingly. Khao Thamorat is actually located in the neighboring,
Si Thep. It is part of
Si Thep Historical Park. ==Geography==