Inthakin also known as Sai Khan Dok -- บูชาเสาอินทขีล worship of the city pillar -- ประเพณี tradition of ใส่ขันดอก flower offering to the อินทขิล pillar -- is a festival held every year in Chiang Mai, Thailand. It is a uniquely Chiang Mai Festival. The citizens of Chiang Mai are given the opportunity to venerate the guardian spirits of the city, particularly the spirits associated with the City Pillar, known as Sao Inthakin (The Lord Indra's Pillar). This pillar had been used for an earlier city built in the same area and is associated with the Hindu god Lord Indra.