Doi Suthep. The golden hilltop temple overlooking the city — Chiang Mai's one unmissable sight. Entry costs ฿50 ($1.50), plus a shared songthaew up the mountain. Go before 9 am; clouds and crowds build by noon.
Ethical elephant sanctuary. Half-day visits — feeding, walking, mud baths, no riding — start around ฿2,500 ($70) with pickup and lunch. Book a day ahead; morning slots are cooler for the elephants and for you.
Old City temples. Wat Chedi Luang's ruined giant chedi and Wat Phra Singh are the two to see; both sit inside the moat and cost little or nothing. An easy on-foot morning with a cafe stop between them.
Sunday Walking Street and the Night Bazaar. The Sunday market along Ratchadamnoen Road is the best market in Thailand — crafts, food, no hard sell. Any other night, the Night Bazaar runs year-round.
Doi Inthanon day trip. Thailand's highest peak, with twin royal pagodas, waterfalls and cloud-forest walks. Full-day tours from about ฿1,500 ($45). Cold at the top — carry a layer.
Thai cooking class. Chiang Mai is the cheapest place in Thailand to learn pad thai and curry pastes properly. Half-day classes with a market tour run around ฿1,200 ($35), and veg versions of every dish are standard.
Chiang Mai Night Safari. A tram ride through open-range enclosures after dark, plus walking trails and a predator zone. It's the easiest family evening out in the city — general admission runs around ฿900 ($25).
Nimman (Nimmanhaemin Road). Chiang Mai's cafe-and-design district near the university — specialty coffee, small galleries and the One Nimman complex. Come for a slow afternoon; it's the modern counterweight to the Old City's temples.
Grand Canyon Water Park. A flooded quarry south of town with inflatable obstacle courses and jump platforms. Entry runs roughly ฿400-฿700 ($12-$20). A fun hot-season half day with teens; skip it in December and January when the water is cold.