Lo-Manthang's (Upper Mustang) culture is deep rooted in the religious sentiments of its people. The township abounds with many chhortens, mani-walls and monasteries. Prayer flags flutter above all the houses-conveying mantras to all corners of the world. The Lobas are exclusively Buddhists and conform to the Sakya-pa sect of Tibetan Buddhism. Bon prevailed before Buddhism, which was later replaced by Ningma Pa Sect (Dhakar-Kayu subsect) and subsequently by Sakya Pa Sect (Sakyapa, Ngorpa subsects) of Buddhism. Of the three Gompas in Lo-Manthang, the Jhampa Gompa is the oldest. It was built in 1387 AD during the reign of the famous king Anguin Sangbo and is believed to be a replica of Ghangtse Jhampa Gompa of Tibet, which still exists in Ghangtse is near by Khasa (Zhangmu).
Mustang region lies in the western part of Nepal and is officially the name of the district having a Tibet like region. It is accessible by foot trail or by air. It is located along the banks of the Kali Gandaki river. It is divided into two parts namely the Upper Mustang and the Lower Mustang. Upper Mustang is largely inhabited by Manangi people and goes up to the ancient capital of Lo- Manthang. Whereas Lower Mustang covers the part of lower valley along the Kali Gandaki River.