Angkor
In the early days of Angkor, the worship of Vishnu was secondary to that of Shiva. The relationship seems to have changed with the construction of Angkor Wat by King Suryavarman II as his personal mausoleum at the beginning of the 12th century. The central religious image of Angkor Wat was an image of Vishnu, and an inscription identifies Suryavarman as "Paramavishnuloka," or "he who enters the heavenly world of Vishnu." Religious syncretism, however, remained thoroughgoing in Khmer society: the state religion of Shaivism was not necessarily abrogated by Suryavarman's turn to Vishnu, and the temple may well have housed a royal lingam. Furthermore, the turn to Vaishnavism did not abrogate the royal personality cult of Angkor. by which the reigning king was identified with the deity. According to Angkor scholar Georges Coedès, "Angkor Wat is, if you like, a vaishnavite sanctuary, but the Vishnu venerated there was not the ancient Hindu deity nor even one of the deity's traditional incarnations, but the king Suryavarman II posthumously identified with Vishnu, consubstantial with him, residing in a mausoleum decorated with the graceful figures of apsaras just like Vishnu in his celestial palace." Suryavarman proclaimed his identity with Vishnu, just as his predecessors had claimed consubstantiation with Shiva.
Culture of Cambodia
The Angkorian architects and sculptors created temples that mapped the cosmic world in stone. Khmer decorations drew inspiration from religion, and mythical creatures from Hinduism and Buddhism were carved on walls. Temples were built in accordance to the rule of ancient Khmer architecture that dictated that a basic temple layout include a central shrine, a courtyard, an enclosing wall, and a moat. Khmer motifs use many creatures from Buddhist and Hindu mythology, like the Royal Palace in Phnom Penh, use motifs such as the garuda, a mythical bird in Hinduism. The architecture of Cambodia developed in stages under the Khmer empire from the 9th to the 15th century, preserved in many buildings of the Angkor temple. The remains of secular architecture from this time are rare, as only religious buildings were made of stone. The architecture of the Angkor period used specific structural features and styles, which are one of the main methods used to date the temples, along with inscriptions.