WELCOME TO PREAH VIHEAR One Day Itinerary: 1/One Day Tour Start early in the morning from Siem Reap =>Anlong Veng to see to Tamok house, former Khmer rouge house, Pol Pot grave, Preah Vihear temple near Thai border, in the afternoon Koh Ker, the fascinating pyramid temple 120km from Siem Reap.