Preah Vihear Temple is a Khmer (Cambodian) temple situated atop a 525-meter cliff in the Dângrêk Mountains in the Preah Vihear Province of Cambodia. Affording a view for many kilometers across a plain, Prasat Preah Vihear has the most spectacular setting of all the temples built during the six-century-long Khmer Empire. As a key edifice of the empire's spiritual life, it was supported and modified by successive kings and so bears elements of several architectural styles. Preah Vihear is unusual among Khmer temples in being constructed along a long north-south axis, rather than having the conventional rectangular plan with orientation toward the east.