Khmer architecture

Khmer architecture, also known as Angkorian architecture, is the architecture produced by the Khmers during the Angkor period of the Khmer Empire from approximately the later half of the 8th century CE to the first half of the 15th century CE.

The architecture of the Indian rock-cut temples, particularly in sculpture, had an influence on Southeast Asia and was widely adopted into the Indianised architecture of Cambodian (Khmer), Annamese and Javanese temples (of the Greater India).  Evolved from Indian influences, Khmer architecture became clearly distinct from that of the Indian sub-continent as it developed its own special characteristics, some of which were created independently and others of which were incorporated from neighboring cultural traditions, resulting in a new artistic style in Asian architecture unique to the Angkorian tradition. The development of Khmer architecture as a distinct style is particularly evident in artistic depictions of divine and royal figures with facial features representative of the local Khmer population, including rounder faces, broader brows, and other physical characteristics. In any study of Angkorian architecture, the emphasis is necessarily on religious architecture, since all the remaining Angkorian buildings are religious in nature. During the period of Angkor, only temples and other religious buildings were constructed of stone.

Non-religious buildings such as dwellings were constructed of perishable materials such as wood, and so have not survived. The religious architecture of Angkor has characteristic structures, elements, and motifs, which are identified in the glossary below. Since a number of different architectural styles succeeded one another during the Angkorean period, not all of these features were equally in evidence throughout the period. Indeed, scholars have referred to the presence or absence of such features as one source of evidence for dating the remains.

Periodization

Many temples had been built before Cambodia became a powerful Kingdom of Khmer Empire which dominated most of the Indochina region. At that time, Cambodia was known as Chenla kingdom, the predecessor state of the Khmer empire. There are three pre-Angkorean architectural styles :

• Sambor Prei Kuk style (610-650): Sambor Prei Kuk, also known as Isanapura, was the capital of the Chenla Kingdom. Temples of Sambor Prei Kuk were built in rounded, plain colonettes with capitals that include a bulb.
• Prei Khmeng style (635-700): Structures reveal masterpieces of sculpture but examples are scarce. Colonettes are larger than those of previous styles. Buildings were more heavily decorated but had general decline in standards.
• Kompong Preah style (700-800): Temples with more decorative rings on colonettes which remain cylindrical. Brick constructions were being continued.

Sambor Prei Kuk

Scholars have worked to develop a periodization of Angkorean architectural styles. The following periods and styles may be distinguished. Each is named for a particular temple regarded as paradigmatic for the style.

• Kulen style (825-875): Continuation of pre-Angkorean style but it was a period of innovation and borrowing such as from Cham temples. Tower is mainly square and relatively high as well as brick with laterite walls and stone door surrounds but square and octagonal colonettes begin to appear.
• Preah Ko style (877-886): Hariharalaya was the first capital city of the Khmer empire located in the area of Angkor; its ruins are in the area now called Roluos some fifteen kilometers southeast of the modern city of Siem Reap. The earliest surviving temple of Hariharalaya is Preah Ko; the others are Bakong and Lolei. The temples of the Preah Ko style are known for their small brick towers and for the great beauty and delicacy of their lintels.
• Bakheng Style (889-923): Bakheng was the first temple mountain constructed in the area of Angkor proper north of Siem Reap. It was the state temple of King Yasovarman, who built his capital of Yasodharapura around it. Located on a hill (phnom), it is currently one of the most endangered of the monuments, having become a favorite perch for tourists eager to witness a glorious sundown at Angkor.
• Koh Ker Style (921-944): During the reign of King Jayavarman IV, capital of Khmer empire was removed from Angkor region through the north which is called Koh Ker. The architectural style of temples in Koh Ker, scale of buildings diminishes toward center. Brick still main material but sandstone also used.
• Pre Rup Style (944-968): Under King Rajendravarman, the Angkorian Khmer built the temples of Pre Rup, East Mebon and Phimeanakas. Their common style is named after the state temple mountain of Pre Rup.
• Banteay Srei Style (967-1000): Banteay Srei is the only major Angkorian temple constructed not by a monarch, but by a courtier. It is known for its small scale and the extreme refinement of its decorative carvings, including several famous narrative bas-reliefs dealing with scenes from Indian mythology.

Banteay Srei

• Khleang Style (968-1010): The Khleang temples, first use of galleries. Cruciform gopuras. Octagonal colonettes. Restrained decorative carving. A few temples that were built in this style are Ta Keo, Phimeanakas.
• Baphuon Style (1050-1080): Baphuon, the massive temple mountain of King Udayadityavarman II was apparently the temple that most impressed the Chinese traveller Zhou Daguan, who visited Angkor toward the end of the 13th century. Its unique relief carvings have a naive dynamic quality that contrast with the rigidity of the figures typical of some other periods. As of 2008, Baphuon is under restoration and cannot currently be appreciated in its full magnificence.
• Classical or Angkor Wat Style (1080-1175): Angkor Wat, the temple and perhaps the mausoleum of King Suryavarman II, is the greatest of the Angkorian temples and defines what has come to be known as the classical style of Angkorian architecture. Other temples in this style are Banteay Samre and Thommanon in the area of Angkor, and Phimai in modern Thailand.
• Bayon Style (1181-1243): In the final quarter of the 12th century, King Jayavarman VII freed the country of Angkor from occupation by an invasionary force from Champa. Thereafter, he began a massive program of monumental construction, paradigmatic for which was the state temple called the Bayon. The king's other foundations participated in the style of the Bayon, and included Ta Prohm, Preah Khan, Angkor Thom, and Banteay Chmar. Though grandiose in plan and elaborately decorated, the temples exhibit a hurriedness of construction that contrasts with the perfection of Angkor Wat.

Bayon

• Post Bayon Style (1243-1431): Following the period of frantic construction under Jayavarman VII, Angkorian architecture entered the period of its decline. The 13th century Terrace of the Leper King is known for its dynamic relief sculptures of demon kings, dancers, and nāgas.

Materials

Angkorian builders used brick, sandstone, laterite and wood as their materials. The ruins that remain are of brick, sandstone and laterite, the wood elements having been lost to decay and other destructive processes.

Brick

The earliest Angkorian temples were made mainly of brick. Good examples are the temple towers of Preah Ko, Lolei and Bakong at Hariharalaya, and Chóp Mạt in Tay Ninh. Decorations were usually carved into a stucco applied to the brick, rather than into the brick itself. This was because bricks were a softer material, and did not lend themselves to sculpting, as opposed to stones of different kinds such as the Sandstones or the Granites. However, the tenets of the Sacred Architecture as enunciated in the Vedas and the Shastras, require no adhesives to be used while building blocks are assembled one over the other to create the Temples, as such bricks have been used only in relatively smaller temples such as Lolei and The Preah Ko. Besides, strength of bricks is much lesser as compared to the stones (mentioned here-in) and the former degrade with age.

Preah Ko

Angkor's neighbor state of Champa was also the home to numerous brick temples that are similar in style to those of Angkor. The most extensive ruins are at Mỹ Sơn in Vietnam. A Cham story tells of the time that the two countries settled an armed conflict by means of a tower-building contest proposed by the Cham King Po Klaung Garai. While the Khmer built a standard brick tower, Po Klaung Garai directed his people to build an impressive replica of paper and wood. In the end, the Cham replica was more impressive than the real brick tower of the Khmer, and the Cham won the contest.

Po Klaung Garai

Sandstone

The only stone used by Angkorian builders was sandstone, obtained from the Kulen mountains. Since its obtainment was considerably more expensive than that of brick, sandstone only gradually came into use, and at first was used for particular elements such as door frames. The 10th-century temple of Ta Keo is the first Angkorian temple to be constructed more or less entirely from Sandstone.

Ta Keo

Laterite

Angkorian builders used laterite, a clay that is soft when taken from the ground but that hardens when exposed to the sun, for foundations and other hidden parts of buildings. Because the surface of laterite is uneven, it was not suitable for decorative carvings, unless first dressed with stucco. Laterite was more commonly used in the Khmer provinces than at Angkor itself. Because the water table in this entire region is well high, Laterite has been used in the underlying layers of Angkor Wat and other temples (especially the larger ones), because it can absorb water and help towards better stability of the Temple.

Structures

Central sanctuary

The central prang of Angkor Wat temple symbolizes the mount Meru.

The central sanctuary of an Angkorian temple was home to the temple's primary deity, the one to whom the site was dedicated: typically Shiva or Vishnu in the case of a Hindu temple, Buddha or a bodhisattva in the case of a Buddhist temple. The deity was represented by a statue (or in the case of Shiva, most commonly by a linga). Since the temple was not considered a place of worship for use by the population at large, but rather a home for the deity, the sanctuary needed only to be large enough to hold the statue or linga; it was never more than a few metres across. Its importance was instead conveyed by the height of the tower (prasat) rising above it, by its location at the centre of the temple, and by the greater decoration on its walls. Symbolically, the sanctuary represented Mount Meru, the legendary home of the Hindu gods.

The five prang towers of Angkor Wat

Prang

A prang is a tall tower-like spire, usually richly carved. They were a common shrine element of Hindu and Buddhist architecture in the Khmer Empire (802-1431). They were later adapted by Buddhist builders in Thailand, especially during the Ayutthaya Kingdom (1350-1767) and Rattanakosin Kingdom (1782-1932). In Thailand it appears only with the most important Buddhist temples.

The central prang of Angkor Wat

Enclosure

Khmer temples were typically enclosed by a concentric series of walls, with the central sanctuary in the middle; this arrangement represented the mountain ranges surrounding Mount Meru, the mythical home of the gods. Enclosures are the spaces between these walls, and between the innermost wall and the temple itself. By modern convention, enclosures are numbered from the centre outwards. The walls defining the enclosures of Khmer temples are frequently lined by galleries, while passage through the walls is by way of gopuras located at the cardinal points.

Third Enclosure Covered Gallery At Ta Prohm Temple 

Gallery

A cruciform gallery separates the courtyards at Angkor Wat.

A gallery is a passageway running along the wall of an enclosure or along the axis of a temple, often open to one or both sides. Historically, the form of the gallery evolved during the 10th century from the increasingly long hallways which had earlier been used to surround the central sanctuary of a temple. During the period of Angkor Wat in the first half of the 12th century, additional half galleries on one side were introduced to buttress the structure of the temple.

A cruciform gallery separates the courtyards at Angkor Wat.

Gopura

Many of the gopuras constructed under Jayavarman VII toward the end of the 12th century, such as this one at Angkor Thom, are adorned with gigantic stone faces of Avalokiteshvara.

A gopura is an entrance building. At Angkor, passage through the enclosure walls surrounding a temple compound is frequently accomplished by means of an impressive gopura, rather than just an aperture in the wall or a doorway. Enclosures surrounding a temple are often constructed with a gopura at each of the four cardinal points. In plan, gopuras are usually cross-shaped and elongated along the axis of the enclosure wall.

If the wall is constructed with an accompanying gallery, the gallery is sometimes connected to the arms of the gopura. Many Angkorian gopuras have a tower at the centre of the cross. The lintels and pediments are often decorated, and guardian figures (dvarapalas) are often placed or carved on either side of the doorways.

A gopura leads into the 12th-century temple compound at Ta Prohm

Hall of Dancers

A Hall of Dancers is the structure of a type found in certain late 12th-century temples constructed under King Jayavarman VII: Ta Prohm, Preah Khan, Banteay Kdei and Banteay Chhmar. It is a rectangular building elongated along the temple's east axis and divided into four courtyards by galleries. Formerly it had a roof made of perishable materials; now only the stone walls remain. The pillars of the galleries are decorated with carved designs of dancing apsaras; hence scholars have suggested that the hall itself may have been used for dancing.

Ta Prohm

House of Fire

House of Fire, or Dharmasala, is the name given to a type of building found only in temples constructed during the reign of late 12th-century monarch Jayavarman VII: Preah Khan, Ta Prohm and Banteay Chhmar. A House of Fire has thick walls, a tower at the west end and south-facing windows.

Scholars theorize that the House of Fire functioned as a "rest house with fire" for travellers. An inscription at Preah Khan tells of 121 such rest houses lining the highways into Angkor. The Chinese traveller Zhou Daguan expressed his admiration for these rest houses when he visited Angkor in 1296 CE. Another theory is that the House of Fire had a religious function as the repository the sacred flame used in sacred ceremonies.

Banteay Chhmar

Library

Structures conventionally known as "libraries" are a common feature of the Khmer temple architecture, but their true purpose remains unknown. Most likely they functioned broadly as religious shrines rather than strictly as repositories of manuscripts. Freestanding buildings, they were normally placed in pairs on either side of the entrance to an enclosure, opening to the west.

The libraries at Angkor Wat

Srah and baray

Srahs and barays were reservoirs, generally created by excavation and embankment, respectively. It is not clear whether the significance of these reservoirs was religious, agricultural, or a combination of the two.

The two largest reservoirs at Angkor were the West Baray and the East Baray located on either side of Angkor Thom. The East Baray is now dry. The West Mebon is an 11th-century temple standing at the center of the West Baray and the East Mebon is a 10th-century temple standing at the center of the East Baray.

The baray associated with Preah Khan is the Jayataka, in the middle of which stands the 12th-century temple of Neak Pean. Scholars have speculated that the Jayataka represents the Himalayan lake of Anavatapta, known for its miraculous healing powers.

East Baray

Temple mountain

The dominant scheme for the construction of state temples in the Angkorian period was that of the Temple Mountain, an architectural representation of Mount Meru, the home of the gods in Hinduism. Enclosures represented the mountain chains surrounding Mount Meru, while a moat represented the ocean. The temple itself took shape as a pyramid of several levels, and the home of the gods was represented by the elevated sanctuary at the center of the temple.

The first great temple mountain was the Bakong, a five-level pyramid dedicated in 881 by King Indravarman I. The structure of Bakong took shape of stepped pyramid, popularly identified as temple mountain of early Khmer temple architecture. The striking similarity of the Bakong and Borobudur in Java, going into architectural details such as the gateways and stairs to the upper terraces, strongly suggests that Borobudur might have served as the prototype of Bakong. There must have been exchanges of travelers, if not mission, between Khmer kingdom and the Sailendras in Java. Transmitting to Cambodia not only ideas, but also technical and architectural details of Borobudur, including arched gateways in corbelling method.

The Bakong is the earliest surviving Temple Mountain at Angko

Other Khmer temple mountains include Baphuon, Pre Rup, Ta Keo, Koh Ker, the Phimeanakas, and most notably the Phnom Bakheng at Angkor. 

According to Charles Higham, "A temple was built for the worship of the ruler, whose essence, if a Saivite, was embodied in a linga... housed in the central sanctuary which served as a temple-mausoleum for the ruler after his death...these central temples also contained shrines dedicated to the royal ancestors and thus became centres of ancestor worship."

Koh Ker