Doi Wiang Pha is to be announced as a national park covering the areas of Mae Fang National Conserved Forest in Tambol Sridongyen, Tambol Maetalob, Chaiprakarn District, Tambol Mae Kha, Tambol Mae Kha, Fang District, Chiang Mai Province, and the left side of Mae Lao National Conserved Forest in Tambol Pa Daed, Tambol Srithoi, Tambol Thakor of Chiang Rai Province within an approximate area of 583 square kilometers or 364,375 rai.

The geographical features of the National Park consist of high mountains, extending northwards, which are regarded as the boundary between Chiang Mai and Chiang Rai provinces. Doi Wiang Pha is the highest mountain of the National Park, at the altitude of 1,834 meters above the medium sea level. Most of the areas are water-source forests for major gullies, particularly Fang River and branches of Lao River such as Mae Fangluang Gully, Mae Fangnoi Gully, Yangmin River, etc.

Huai Sai Khao Waterfall

Huai Sai Khao Waterfall is a 3-step, small-sized waterfall, originated from Sai Khao Gulley. The Waterfall is situated approximately 300 meters away from the National Park's office. In summer, the Waterfall rather dries up.

Doi Wiang Pha Waterfall

Doi Wiang Pha Waterfall is approximately 18 meters high, originated from Maetalob Gulley and situated approximately 8 kilometers away from the National Park's office.

Mae Fangluang Waterfall

Mae Fangluang Waterfall is approximately 10 meters high, situated approximately 10 kilometers away from the National Park's Protection Unit No. Vor.Phor.1 (Hua Fai).

Doi Wiang Pha Sightseeing Spot

Tourists may experience the natural charms of mountain ranges at dawn and in the twilight. In winter, the weather is coal and foggy in the morning. The sightseeing spot is situated approximately 30 kilometers away from the National Park's Protection Unit No. Vor.Phor.1 (Hua Fai).