The seal of the province shows the stupa at Phra That Si Song Rak, which was built in 1560 by King Maha Chakrapat of the Ayutthaya Kingdom and King Chai Chetha of Lan Xang as a symbol of friendship between the two kingdoms.[3] The provincial tree is the Khasi pine (Pinus kesiya).
The provincial slogan is "city of the sea of mountains, coldest place in Siam, with beautiful flowers of three seasons."[4]