inthakin also known as Sai khan dok-worship of the city pillar. This is a tradition of flower offering to the pillar.The festival held every year in Chiang Mai,Thailand. The people 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.