The temple is a sort of contradiction in Cambodia. The two most visited sites in Cambodia are the sites related to the Cambodian Khmer Rouge period and Angkor Wat which was a cornerstone of a vast Khmer empire.
I'm not going to explain the history and the development of Angkor Wat. For that, you can go here or here for K-12 materials.
When you talk to Cambodians about Angkor Wat and the various temples, there are a number of broad contradictions going on. It is a religious site. Like many wonders of the world, the root reason for its construction is religious. The problem is the commercialization. It is true that you need tourism to help out with the economy. Siem Reap is one of the poorest sections of Cambodia, so the tourism does help. The problem is when you arrive as a tourist, there are aggressive sellers of everything from post cards to musical instruments, etc. The experience gets convoluted as far as who controls the tourist industry in Siem Reap.
Outside investment.
The Japanese, Chinese, Koreans and Vietnamese have all heavily invested into the area. Because of the proximity to the Angkor Wat temple complex, you see a wide range of hotels in the city. Most Cambodians can not book a room in the hotels, but they do certainly work in them. For a one day pass, it will cost you 20 American dollars. It's not exactly cheap. It seems that someone is making the money, but I'm not sure if it is getting reinvested in the complex or going to other pockets.The Visit
Angkor Wat is actually a huge complex. It is several kilometers in length, and it contains a number of temples scattered throughout the area. Banyon Temple is the first temple that we visited. Constructed in the 13th Century, it had a number of interesting passageways and corners. What is strange is that you are allowed to walk into the temple, even though it is a sensitive site.
This is a wide angle shot. I like my wide angle on my Nikon as it captures a huge swath of the landscape.
Indeed, this is the duality of the Angkor Wat Complex as evident in the Bayon Temple. There is ancient beauty, and a weird cheezy aspect to it.

Between all the walls is a question. When is the use of an ancient site good for the country? Can a country really use ancient sites without the potential issue of damage?
Cambodia for the most part has seized the moment with the Angkor Wat complex. On the other hand, the commercialization of it all bothes the heck out of me.