Religious Beliefs. About eighty-five percent of the people are Theravada Buddhists, and the monarch must be a Buddhist. Virtually all Tai-speaking peoples are Theravada Buddhists, as are members of many of the ethnic minorities. The Buddhism of Central Tais often is referred to as Lankavamsa, reflecting its origins in Sri Lanka. Thai Buddhism, however, is a syncretic religion that borrows from earlier animistic beliefs, Hinduism, and Christianity. A noticeable manifestation of animism in Thai Buddhism are the spirit houses associated with almost all houses and buildings. These usually are small model houses placed on a pedestal, that serve as a home for the spirits associated with the site. These houses are decorated and presented with daily offerings. Many large trees also are considered to serve as the home of spirits and are decorated and given offerings.