Cradled in the folds of the Himalayas, Bhutan has relied on its geographical isolation to protect itself from outside cultural influences. A sparsely populated country bordered by India to the south, and China to the north, Bhutan has long maintained a policy of strict isolationism, both culturally and economically, with the goal of preserving its cultural heritage and independence. Only in the last decades of the 20th century were foreigners allowed to visit the country, and only then in limited numbers. In this way, Bhutan has successfully preserved many aspects of its culture, which dates directly back to the mid-17th century.
Modern Bhutanese culture derives from ancient culture. This culture affected the early growth of this country. Dzongkha and Sharchop, the principal Bhutanese languages, are closely related to Tibetan, and Bhutanese monks read and write the ancient variant of the Tibetan language, known as chhokey. The Bhutanese are physically similar to the Tibetans, but history does not record when they crossed over the Himalayas and settled in the south-draining valleys of Bhutan. Both Tibetans and Bhutanese revere the tantric guru, Padmasambhava, the founder of Himalayan Buddhism in the 8th century.
Bhutanese society is centered around the practice of Buddhism, which is the main religion. Religious beliefs are evidenced in all aspects of life. Prayer flags flutter on hillsides, offering up prayers to benefit all nearby sentient beings. Houses each fly a small white flag on the roof indicating the owner has made his offering payments to appease the local god. Each valley or district is dominated by a huge dzong, or high-walled fortress, which serves the religious and administrative center of the district.
Approximately 23% of the population is Hindu. There is a small Muslim population in Bhutan, covering 0.2% of the whole country's population. Overall, 75% of the population is Buddhist, and 0.4% other religions.