What “roof of the world” refers to
The phrase “roof of the world” is a traditional nickname rather than a technical term. It is most often applied to the Tibetan plateau, which averages well over 4,000 metres above sea level and is the highest large plateau on Earth. The name has also been used for the Pamir region in Central Asia, so context matters.
The Himalayas form the southern edge of the plateau, while other great ranges bound it to the north and west. Several of Asia’s major rivers have headwaters on or near the plateau, including the Yangtze, Yellow, Mekong, Indus and Brahmaputra systems. That role as a source of water is part of why mountains and lakes here have long been treated as sacred.
To avoid confusion: the Himalayas run through several countries, including India, Nepal, Bhutan and Pakistan, as well as Tibet, and Buddhist communities live along much of their length. This article concentrates on the plateau and on how Buddhism became established there.
The land before Buddhism
Before Buddhism arrived, the plateau had indigenous religious practices. These involved reverence for mountain and lake deities, local spirits, and ritual specialists. The religion known as Bon later organised itself in distinctive ways, and scholars still discuss how it relates to earlier practice and to Buddhism. What is clear is that the sacred geography of Tibet, with its holy peaks and pilgrimage circuits, drew on an older sense that powerful beings live in the land. When Buddhism arrived, these deities were often recast in Buddhist terms, as the later idea of mountain deities in Buddhist thought illustrates.
The traditional account of arrival
Tibetan histories place the first royal engagement with Buddhism in the 7th century, during the reign of King Songtsen Gampo, who is credited with unifying much of the plateau. According to tradition, he married a Nepalese princess and a Chinese princess, and both brought Buddhist images with them. The temples later associated with these images, the Jokhang and Ramoche, are among the most revered in Tibet. Historians are cautious about details, since the oldest surviving accounts date from later centuries, but the general picture of royal contacts with Buddhist neighbours is widely accepted.
In the 8th century, King Trisong Detsen is said to have invited the scholar Shantarakshita and the teacher Padmasambhava to Tibet, and to have supported the founding of Samye, traditionally the first monastery. This period is remembered as the beginning of an institutional Buddhism. The lasting influence of Indian scholarship, including the traditions associated with Nalanda, is a major theme, and the wider story of how Buddhism reaches Tibet is described in its own article.
Fragmentation and revival
The Tibetan empire broke apart in the 9th century. Tradition says that a later king, Langdarma, opposed Buddhist institutions, though historians debate how severe this period actually was. After a time of political fragmentation, Buddhism was revived in the 10th and 11th centuries, partly through new translations from Sanskrit and partly through teachers travelling between India and Tibet. In western Tibet, rulers sponsored temples, and the Indian teacher Atisha is traditionally said to have visited in the 11th century.
From this revival came the major schools: Nyingma, which traces itself to the earlier period, and Kagyu, Sakya and later Gelug, each with its own lineages. Their relationship is summarised in the overview of the Tibetan Buddhist schools, and in the account of the Gelug school, which later became dominant in central Tibet.
From plateau to wider world
Tibetan Buddhism did not stay on the plateau. It spread to Mongolia, to Himalayan regions such as Ladakh, Sikkim and Bhutan, and to parts of China. It reached the Tibetan diaspora communities in India and Nepal, and from there to wider audiences. The broader story of how teachings travelled is told in the history of the spread of Buddhism.
What this means for pilgrims
Many pilgrimage places on the plateau reflect this layered history:
- royal-era temples tied to the early kings
- monasteries founded during the revival
- mountains and lakes whose sanctity predates Buddhism
- hermitages linked with famed teachers
Because the plateau is so high, travel here carries real physical risks. Altitude illness can affect anyone, medical care may be far away, and weather changes quickly. Check current official sources on permits and conditions, and read the guidance on altitude sickness awareness before travelling. This is general information, not medical advice.
The phrase “roof of the world” may sound dramatic, but for Tibetan pilgrims it is mostly a plain description of home.