The Navel City Pillar of Chiang Rai (Thai: เสาสะดือเมืองเชียงราย (เสาหลักเมือง)) was constructed in 1987 on the occasion of the 60th birthday of King Bhumibol Adulyadej and the 725th anniversary of the City of Chiang Rai in northern Thailand.
The outside area symbolises river and land, the inner part the six tiers of the heavens (Catummaharajika, Tavatimsa, Yama, Tusita, Nimmanarati, and Paranimmitavasavatti) which are divided by the five important rivers of ancient legend (Ganges, Yamuna, Ajiravati, Sarabhu, and Mahi).
The platform of the main pillar is made of marble which is divided into three tiers to symbolise the Rupabrahma, Arupabrahma, and Nirvana.
Mr Singhkhum Somkrue engraved the navel city pillars.
Near the navel city pillar, there is a "National Cultural Cell of Chiang Rai" constructed on 19 January 2001.