A monastery is a place where monks live, study, and perform ritual. It includes temples and other structures. Monasteries are central to Buddhism, and are also important in Bon, Hinduism, and Daoism. In Himalayan, Tibetan, and Inner Asian areas, some monasteries are enormous, wealthy, and powerful institutions, with branches of satellite monasteries forming networks across regions, often with thousands of monks, many decorated chapels, and huge holdings of land. Other monasteries, called hermitages, can be extremely simple, little more than a cave where hermits meditate. Generally, a Tibetan Buddhist monastery will have an assembly hall, several temples (Tib. lhakhang) for worship of specific deities, a protector chapel, as well as monks’ accommodations. A related institution in Newar Buddhism are the baha and bahi.