This park sits on the borders of Chiang Rai and Chiang Mai. Langka Luang is its highest mountain at 2,030 meters, the highest mountain in Chiang Rai and the fifth in Thailand.
This national park is another paradise for bird watchers. especially those who like highland birds. From the park office, there is a 2 kilometers scenic route, Trekking to the top of Doi Luang takes about 4 days. From there, we can see the vast area of Khun Chae, Chae Son, and Mae Ta-Khrai National Parks.
There is a three-day route to Doi Mot, which is 1,700 meters high. From this mountain top. we can see the city of Chiang Mai to the west and Chiang Rai to the east.
Those wishing to conquest Langka Luang should contact the park office. No accommodation is provided but visitors can bring their own sleeping gear.
This fall is part of Doi Luang National Park. Of its 9 tiers, the most beautiful are the fourth and the fifth. From the camping ground to the second floor, there is a natural trail that allows visitors to study nature at close proximity. Another exciting route is the 1,500 meters path to the top of the fall, a vantage point to admire the whole area of Doi Luang, Phayao province and Phayao Lake. For trekking. there is a path from this fall to Doi Nok in Phayao province. Guides are available on request at the Park Office. 
This is the best spot to enjoy the sunrise in Chiang Rai because of Phu Chi Fa’s geographical characteristics. The highest plateau on top of the mountain is a vast grassy plain extending its reach over the Laotian border. Its highest peak is like a pointing finger towards the sky. Once on top, the levels of valleys below spread before our eyes. From here, we can see much farther into Laos than from any other mountain top. 
At its height of 1,635 meters, Doi Pha Tang provides a superb observation point of Thai-Laotian border. The best time of the year is the cold season when seas of fog cover the valleys as far as the eyes can see. When the sun is getting higher, the fog lifts. It gradually melts before our eyes like streams of white water, disclosing the winding the Mekong River amidst the dense forest and green valleys. The pink cherry blossoms from December to January can only add to the daily charm and beauty of this area.
Located 55 kilometres east of Chiang Saen, (and 114 kilometres northeast of Chiang Rai provincial capital), this settlement faces Laos across the Mekong River. Local tour operators can arrange for tourists to visit Laos. 
Built in 1291, this temple houses the biggest chedi in Chiang Saen. It is a bell-shaped chedi with an octagonal base. The main hall and other surrounding chedis have all fallen in ruins. 
The museum arranges three displays for its visitors. The first Section narrates the settlement history of Chiang Saen and its pre-historic culture. Archeological finds on display comprise stucco Sculptures from Wat Pa Sak, Buddha images in Lanna artistic Style, ancient inscriptions, and pottery. 
In 1295, Prince Saen Phu built this temple to contain Buddha’s relics. He also had 300 teak trees planted in the temple compound. 
Phraya Son Ratchada-ngoenkong had this temple built in 1489. He also had a huge Buddha image made. The dimensions of this image are 2 meters by 3 meters, using about 1,200 kilograms of gold. It was thus called Phra Chao Lan Thong, indicating the price of the gold used. Another beautiful image in this temple is Phra Chao Thong Thip. which is a Sukhothai styled bronze Buddha image with very beautiful facial features. 
This temple challenges its visitors to climb up 339 steps in order to admire its beauty. It is, however, also accessible by car. King Phangkharat had this shrine built to contain Buddha’s relics. In 1487, Muen Chiang Song had a new pagoda built to cover the old pagoda. 
Commonly known as Nong Bong Khai sanctuary since 1985, the lake covers about 640 acres of land. This is an exceptional sight, especially in the cold season when seas of mist cover the whole area. It is a much-chosen recreational resort for local people and tourists. Another special treat at this lake is several flocks of rare birds that migrate to settle around the lake in the cold season, especially audubons, mandarin ducks, teals, and several others. 
One of the best known tourist attractions in the world, the Golden Triangle, is in Chiang Saen where the Mekong River enters Thailand. 
For an aerial glimpse of the Golden Triangle, you need to climb uphill to Doi Chiang Miang by the Mekong River where Wat Phra That Doi Phu Khao once stood. Only a pile of bricks remains to mark the site, but it provides a look-out point to catch the big picture of the Golden Triangle. 
Once a cash crop in this region, opium is now merely a subject of close scrutiny on display in this museum. Visitors will learn all about its history in the Golden Triangle. The museum is open from 8.00 am. to 06.00 pm. Admission is 20 baht. 
This border town faces Myanmar across the Mae Sai River, and is located 62 kilometres north of Chiang Rai on Highway No. 110. Numerous shopping opportunities exist for popular Thai and Burmese goods. 
About 100 meters before the Mae Sai border, there stands another important place of Chiang Rai called Wat Phra That Doi Wao. This chedi was built by a ruler of Yonok Nakkhaphan to contain some strands of Buddha’s hair. It is thus one of the most ancient and most worshipped chedis in Chiang Rai. From the vantage points at this temple, you can visit Myanmar by sight, without having to pay the fees or crossing the borders. 
This is another popular place of worship on Doi Mae Salong. 
Tea is Doi Mae Salongs cash crop exported as far as Bangkok and Taiwan. Tea plantations spread along the mountain terrains. The varieties grown here are both local and imported kinds. Tea shops on Doi Mae Salong allow tourists to have a pre-purchase taste of the tea. Other take-home products available include temperate fruits. preserved fruits, and Chinese ingredients. 
From early or the end of January is the time for the Thai variety of cherry blossoms (locally called Nang Phaya Sue-Khrong meaning tigress flowers). More than 4 kilometers of roadway on Doi Mae Salong are then decorated with pink blossoms. Tigress flowers belong to the same family as cherries, peaches and plums. They usually thrive on high grounds, about 1,000 – 2,000 meters above sea level.