Perhaps the best-known wat in Chiang Mai sits atop Doi Suthep, a mountain overlooking Thailand's northern rose of a city. In a crowd of monks, devout Buddhist followers, and fellow travelers, you'll have a chance to marvel at intricate religious carvings, observe worship rituals, and gaze out over the ever-growing sprawl of Chiang Mai city. Just be sure to bring a bottle of water and your walking shoes - the staircase to the temple is steep. At the base of the stairs, vendors hawk everything from tasty local treats to goods handmade by villagers from the surrounding mountains. There's also a shop selling masks, elephant carvings, and home furnishings so you can do some shopping while recovering from the trek up and down the stairs.
You can combine your trip to Doi Suthep with excursions to Doi Pui, a small Hmong village in the mountains. It's far more touristy than other villages, but if you're on a tight schedule, this will give you a taste of Hmong culture and a chance to learn more about the hill tribe communities in the region, not to mention purchase some beautiful hand-woven textiles. The Bhubing Palace, open to tourists, is on the way to Doi Pui from Doi Suthep as well.