Doi Inthanon National Park

Doi Inthanon is the highest mountain in Thailand, rising to 2,565 metres, and the national park around it is one of the north's great day trips from Chiang Mai, about 60 to 90 kilometres southwest of the city. Often called the 'Roof of Thailand', the park climbs through dense, mossy cloud forest to a cool, often misty summit where temperatures can drop close to freezing on winter mornings — a sharp contrast to the lowland heat. Within its boundaries are tumbling waterfalls, nature trails through evergreen forest, two landmark royal pagodas with manicured gardens, and Hmong and Karen villages where hill-tribe communities grow coffee, strawberries and terraced rice. It is a place to swap temples and markets for mountain air and long views, a genuinely different side of Thailand, and it works equally well as a self-drive trip or an organised tour.

The park's signature sight is the pair of royal pagodas, Napamethanidon and Napaphonphumisiri, built to honour the late king and queen and set among landscaped flower gardens near the top of the mountain, with long views over the ranges when the air is clear. The actual summit of Doi Inthanon, a short distance further, is forested and capped by a small shrine and a marker — there is no grand panorama from the very top, but the misty Ang Ka boardwalk nearby leads through a dripping, moss-draped bog forest alive with birdsong, one of the most atmospheric short walks in Thailand. The summit area is the coolest part of the park, so a warm layer is welcome here even when Chiang Mai is sweltering. Together the pagodas, the gardens and the Ang Ka trail make up the classic high-mountain loop.

Lower down, the park is laced with waterfalls. The roadside Wachirathan Falls is the most powerful and accessible, throwing up spray and rainbows just off the main route; Sirithan and Mae Ya are also worth a stop. A network of nature trails ranges from short boardwalks to the guided Kew Mae Pan ridge trail, a few-hour walk along a grassland escarpment with sweeping views, open in the cool season and requiring a local guide. The park is also home to Hmong and Karen villages, where you can buy hill-grown coffee and strawberries and see terraced fields; the royal agricultural projects here helped replace opium farming with these crops. Birdwatchers come for some of Thailand's richest montane birdlife. A typical visit strings together a waterfall or two, the pagodas, the Ang Ka trail and a village stop into one full day.

Doi Inthanon is too far for a casual hop — plan a full day. Many visitors join an organised tour from Chiang Mai, which handles the driving, the fees and a guide for around US$30–55 per person; others self-drive by car or rent a scooter, though the long mountain climb is demanding on two wheels. By public transport you can take a songthaew toward the town of Chom Thong at the base and arrange a shared truck up, but a tour or car is far simpler. Park entry for international visitors is around US$9 (300 baht) for adults, with small additional charges for some sites and the Kew Mae Pan guide. The road is paved to the summit but winding, so allow plenty of time, and note that the gardens and trails are spread out — you will drive between the main stops rather than walk.

The cool, dry season from November to February is the best and most popular time: clearest skies, the Kew Mae Pan trail open, and the famous cold summit mornings, when frost occasionally forms and Thai visitors come specially to feel the chill. The green season brings powerful waterfalls and lush forest but more cloud and rain, while the March–April period can be hazy from regional burning. Whatever the month, bring a warm layer — the summit is many degrees cooler than Chiang Mai and can be genuinely cold and windy at dawn — along with rain protection, sturdy shoes for the trails and some cash for fees and village stalls. Starting early gets you to the high pagodas before the midday cloud rolls in, and lets you fit the waterfalls in on the way back down the mountain.