Angkor – which means city – was once the seat of the Khmer Empire from the 9th to the 15th cen­tu­ry. It is spread over an incred­i­ble 60 miles, com­prised of over 1,000 stone tem­ples. Angkor Wat is the most strik­ing. Built in the ear­ly 12th cen­tu­ry, it’s the largest reli­gious mon­u­ment in the world today. The tem­ple emu­lates Mount Meru, the sacred cen­tre of the uni­verse in Hin­du mythol­o­gy, while the sur­round­ing moat sym­bol­izes the oceans.