The unique from Architecture Traditional of Indonesia because Indonesia has 33 provinces, each of Indonesia's ethnic groups has its own distinctive form of the traditional vernacular architecture of Indonesia, known as rumah adat.
In Indonesia, the construction of the house symbolizes the division of the macrocosm into three regions: the upper world, the seat of deities and ancestors. The typical way of buildings in Southeast Asia is to build on stilts, an architectural form usually combined with a saddle roof. Another characteristic of Southeast Asian houses is the forked horn on the roof, which is considered to be a symbol of the buffalo, regarded throughout the region as a link between Heaven and this world. The most famous stilt houses of Indonesia are those of the Dayak in Borneo, the Minangkabau and Batak on Sumatra, and the Toraja on Sulawesi.
Rumah adat or Traditional House are at the centre of a social relations, traditional laws, taboos, myths and religions that bind the villagers together. The house provides the main focus for the family and its community, and is the point of departure for many activities of its residents. Traditional Indonesian homes are not architect designed, rather villagers build their own homes, or a community will pool their resources for a structure built under the direction of a master builder and/or a carpenter.
With few exceptions, the peoples of the Indonesian archipelago share a common Austronesian ancestry (originating in Taiwan, c. 6,000 years ago), and traditional homes of Indonesia share a number of characteristics such as timber construction, varied and elaborate roof structures.