The document discusses Angkor Wat, a temple in Cambodia and the largest religious monument in the world. It was built in the 12th century AD during the Khmer Empire's peak. The temple reflects the Khmer Empire's immense power and wealth at that time, requiring thousands of workers and over 30 years to complete. It was designed to represent Mount Meru, the home of the Hindu gods, and was the imperial capital. While no longer serving its original religious functions, Angkor Wat remains a symbol of Cambodian national identity and its rich cultural heritage.