Angkor Wat, built in the early 12th century by King Suryavarman II, it was dedicated to the Hindu god Vishnu. It became the king's state temple and the capital city. Angkor Wat is the largest Hindu temple complex in the world.
Mainly made of sandstone blocks, it is the prime example of the classical style Khmer Architecture. The Khmer architects had become skilled in using sandstone, molding and building it into a great temple.
The temple is a very important symbol to the Cambodians that it even appears to their national flag, and it is also the country's main attraction for visitors. Also a UNESCO Worl Heritage Site, it attracts thousands of tourists every day.
I have visited the temple and been to Siem Reap twice and I just can't wait to see it again this November. :)