Doi Luang National Park Doi Luang National Park Doi Luang National Park () is one of the biggest national parks in Northern Thailand. It covers the Mae Suai, Phan and Wiang Pa Pao districts of Chiang Rai Province, Wang Nuea and Ngao of Lampang Province as well as Mae Chai and Mueang Phayao of Phayao Province. Doi Luang National Park is located in the northwesternmost mountain chains of the Phi Pan Nam Range and was established in 1990 by combining the area of four existing parks. 1,426 m high Doi Luang, a mountain located towards the northern end of the park in Mae Chai
Doi Tung to the princess mother's interest and encouragement, the hills were reforested. She was also instrumental in fighting against the opium trade. As a result the local hill tribes stopped growing poppies and began to grow other crops. The royal villa was originally built as a summer residence for the princess mother and now houses a museum and displaying her work to improve the life quality of local tribal people. The Mae Fah Luang Gardens are a botanical park on the slopes below the royal villa. Flowers and plants grow among rock formations. Doi Tung Doi Tung (ดอยตุง) is a mountain