The 12th century temple of Angkor Wat is the masterpiece of Angkorian architecture. Constructed under the direction of the Khmer king Suryavarman II, it was to serve as the monarch's personal mausoleum and as a temple to the Hindu god Vishnu. It was designed as a pyramid representing the structure of the universe: the highest level at the center of the temple represented Mount Meru, the home of the Hindu gods, with the five towers on the highest level representing the five peaks of the mountain.
The broad moat around the complex represented the oceans that surround the world.
Angkor Wat Temple
The period of Angkor is the period from approximately the latter half of the 8th century A.D. to the first half of the 15th century. If precise dates are required, the beginning may be set in 802 A.D., when the Khmer King Jayavarman II pronounced himself universal monarch (chakravartin) and declared independence from Java, and the end may be set in 1431 A.D., when Thai invaders from the kingdom of Ayutthaya sacked Angkor and caused the Khmer elite to migrate to Phnom Penh.
In any study of Angkorian architecture, the emphasis is necessarily on religious architecture, since the only 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 as such 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 recurred to the presence or absence of such features as one source of evidence for dating the remains.
Scholars have worked to develop a periodization of Angkorian architectural styles. The following periods and styles may be distinguished. Each is named for a particular temple regarded as paradigmatic for the style.
Preah Ko Style (877-886 A.D.): 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.


Baphuon Temple

East Bayon Temple
Reference : Wikipedia