Northern Thailand is characterized largely by forested mountains, where working elephants are still used in forest management. This mountainous region is home to Thailand's many colorful hilltribe people, and trekking and river rafting enable adventurous exploration of this beautiful area. Chiang Mai is the principal norhtern city and is a good base from which to explore the surrounding countryside. 
Doi Inthanon National Park : The 1,005 - square - kilometre park covers Thailand's highest mountain (2,565 metres). The lovely Wachirathan, Siriphum and Mae Pan waterfalls share the mountain with Meo and Karen hilltribe settlements. Forest above 1,800 metres is covered with lichens and wild orchids. 

Mae Klang Waterfall : Chiang Mai's most photographed waterfall lies some 58 kilometres west of the city at the foot of Doi Inthanon Mountain, and provides a picturesque setting for picnics and relaxation.
Borichinda Cave : Visiting the cave, which provides a pleasant setting for picnics, entails a 10-minute drive and a walk of some 2 hours from the Mae Klang Waterfall.

Mae Ya Waterfall : This is located 12 kilometres from Chom Thong market and is best visited by local mini-bus. 
Ob Luang Gorge : This picturesque gorge is 88 kilometres from Chiang Mai provincial capital, and is framed by teak forests and mountains. 
National Parks : Increasing numbers of visitors now come to Chiang Mai in search of the natural environment preserved a famous national parks. Famous national park in Chiang Mai is Doi Inthanon,the highest mountain in Thailand. In most cases, you will find easy access and bungalow accommodation for overnight stays.