Fortresses such as Jathel Dzong, Chelkha Dzong and Dongoen Dzong were built by the Lhapa Kagyu religious school which once dominated the western region in the 12th century. In the eastern region, stone castles called khar were built mostly by the local nobility.
In the early 15th century, the saint Drubthop Thangthong Gyalpo, who was popularly known as Chagzampa, visited the country and built iron bridges in different parts of Bhutan. The architectural landscape changed in the 17th century when Zhabdrung Ngawang Namgyal introduced the construction of dzongs which became the model for all monasteries built or restored from that time. Gangtey Goemba, Dramitse and Tango monasteries are based on the dzong model. After Zhabdrung Ngawang Namgyal, one of the most active temple builders was the 4th Desi, Tenzin Rabgye, who at the end of the 17th century had Taktshang and Tango built in their present form. From the second half of the 19th century and especially after the earthquake of 1905, temples and dzongs were restored and palaces were built. The active patrons were Jigme Namgyal and the successive Kings and their Queens. Some of the best examples of Royal patronage are the Kharbandi monastery in Phuenbtsholing, the Memorial Chorten in Thimphu, the new Kyechu Lhakhang in Paro and the newly built Kuje Lhakhang in Bumthang.
Bhutan's artistic tradition has its roots in Buddhism with almost all representation in the arts running along the prevailing theme of struggle between good and evil. A rare blend of Tibetan, Indian and Chinese traditional styles in characteristic Bhutanese setting. Bhutanese art is mostly symbolic. Principally located in monastic centers, it is highly decorative and ornamental. The Buddhist nature of Bhutan's artistic heritage may be traced to Pema Lingpa, the great 15th century terton (the treasure discoverer) who was an accomplished painter, sculptor, xylographer and architect.
In 1680, Desi Tenzin Rabgye opened the school of Zorig Chusum for thirteen types of Bhutanese arts and crafts under the instructions of Zhabdrung Ngawang Namgyal. Such promotion of traditional Bhutanese art has persevered through the centuries with continued patronage provided by the royal family, nobility and clergy. The common people who depend on the artisans for a wide variety of metals and wooden objects, indispensable to typical Bhutanese households, provide active support to the arts. The thirteen arts of Zorig Chusum area Lhazo (Painting), Shingzo ( Carpentery), Parzo (Carving), Jinzo (Sculpture), Lugzo (Casting), Garzo (Blacksmith), Tsharzo (Bamboo Works), Serzo Ngulzo (Goldsmith & Silversmith), Thagzo (Weaving), Tsehemzo (Embroidery), Dozo (Masonry), Kozo (Leather Work) and Dezo (Paper Works).
Traditional Bhutanese art is distinctive for its religious flavor and anonymity. The artist is often a religious man who creates the work commissioned by the jinda or patron. It is considered a pious act that gains merit for both patron and artist. Though the artist's name is almost never revealed, the name of jinda is sometimes mentioned on the work so that his pious act may be remembered.
Paintings and sculptures are made by the groups of artists working in special workshops executed by monks or laymen. The basic preliminary work is done by the disciples after which the master carries out the finishing touch of the details.
Traditional Bhutanese artists work to make a work of faith. They bound by the very strict iconographic conventions in Bhutanese art and must observe them meticulously. Artists can, however, express their own personality in minor details or scenes.
Over the years, the development of tourism and establishment of a government school for arts and crafts has brought about a change in the purpose of art, especially for the younger generation. For some, the desire to make a living out of art has taken over religious motiv.