The spiritual power of dance in Cambodia has been valued since pre-Angkorian times, and the plentiful images of dance and music in the bas-reliefs of the great monuments of Angkor suggest that this tradition was markedly enhanced in the reign of Jayavarman VII, as a contemporary Chinese report attests. This article explores the ‘halls with dancers’ of the Ta Prohm, Preah Khan and Bayon temples built by king Jayavarman VII and concludes that here dance became a determinant in some Khmer sacred architecture.