Chiang Mai: what to see and where to eat
Everything below comes from open data and each row says where it came from. We have not been to any of these places and we do not rank them.
Things to see

Wat Phra Sing
Buddhist temple in Chiang Mai, Thailand

This user loves Krittaya. / Public domain
Chiang Mai Zoo
zoo in Thailand

Vyacheslav Argenberg / CC BY 4.0
Doi Suthep-Pui National Park
national park of Thailand

Wiang Kum Kam
archaeological site in Chiang Mai province, Thailand

Sutham Jirapanakorn / CC BY 3.0
Op Khan National Park
national park in Thailand

Chiang Mai National Museum
museum in Chiang Mai, Thailand
Chiang Mai Night Safari
Zoo in Thailand

Sacred Heart Cathedral
church in Chiang Mai, Thailand

Bhubing Palace
royal residence

Tribal Museum
ethnographic museum in northern Thailand

Three Kings Monument, Chiang Mai
Monument of Kings Mangrai of Lan Na, Ngam Mueang of Phayao and Ram Khamhaeng of Sukhothai, commemorating their pact of mutual defense in 1287

Tatpong Katanyukul / CC BY-SA 3.0
Chiang Mai city wall
Places to eat
Auf der Au Garden Restaurant & Bistro
Food: german, coffee shop, cake
Mad Dog
Food: pizza
My Place Lounge Chiang Mai - Sports Bar & Restaurant
Food: burger, sandwich, american, international, breakfast, flatbread, Buffalo Wings, Craft Beer
The Duke's Ping River
Food: steak, seafood, pizza, burger, sandwich, pasta
Casa Diverso
Food: international
La Terrasse
Food: french
Nana Bakery
Food: breakfast, coffee shop, thai
Rajdarbar
Food: indian
The Hideout
Food: sandwich
The Salad Concept
Food: salad
ข้าวซอยนิมมาน
Food: thai
เจี่ยท้งเฮง
Food: chinese
เฮือนเพ็ญ
Food: asian, thai
Akha Ama
Food: coffee shop, cake, bagel
Akha Ama Phrasingh
Food: coffee shop, cake
Bella Goose Coffee
Food: coffee shop, specialty coffee, breakfast, american
By Hand Pizza Cafe
Food: pizza
Cafe de L'Amour
Food: coffee shop
Opening hours and tickets: OpenStreetMap contributors. Each one shows the day a volunteer last wrote it down, so check the official site before you set out.