Angkor Wat was the capital of the Khmer Empire between the 9th and 15th centuries. It is home to the largest religious monument in the world, the temple of Angkor Wat, which took over 30,000 workers over 30 years to complete. The size and complexity of Angkor Wat reflects the immense power and resources of the Khmer Empire during this time. While it was originally built as a Hindu temple, it has since been adopted as a symbol of Cambodia and appears on the national flag today.