The Tibet’s main religion is Buddhism. The other religion is Bon. Bon was the first Tibet religion.
Buddhism was founded over 2,500 years ago in India. But it was brought up to Tibet in the sixth century.
Tibetan people have a painting or a sculpture of Buddha with an altar because they are very religious. Usually there are seven bowls of food, fruit, water and butter. lamps are placed as offering on these altar
Reference:
Fiesta! Tibet, Grolier
Image Source:
Wikimedia Commons