The sunset over the mountains is best enjoyed from the Doi Pui Viewpoint. On the way you can stop at the temples Wat Phra That Doi Suthep and Wat Pha Lat.
Updated
AddressRV8Q+JM3 Doi Pui Viewpoint, Tambon Su Thep, Mueang Chiang Mai District, Chiang Mai 50200, Thailand