Wat Phra That Doi Suthep
Still the clearest Chiang Mai landmark because it gives you the city's sacred mountain setting, a major temple, and a real sense of orientation over the valley in one stop.
This is the most useful place to understand why Chiang Mai feels different from Bangkok or Phuket. The temple is not just a photo stop; it anchors the city's religious geography and its relationship with the mountain edge.
Current Info: Dress respectfully and build this into a wider Doi Suthep-side outing rather than treating it as a rushed taxi stop.