The climb is a 306 step staircase bordered by mythical serpents called naga. Presiding over the city at the top is Wat Phra That, one of northern Thailand’s most sacred temples. The golden spire glitters near the summit of Doi Suthep, a 5,499-foot mountain outside Chiang Mai. Lanna was an ancient Thai state located in the upper northern region of Thailand and literally means the land with a million paddy …