Cambodia - Siem Reap
Siem Reap is a popular tourist destination, it is the gateway to the Angkor Wat temple complex. Ankkor Wat is a vast complex of stone buildings and temples. The two most famous being the main temple and Ta Prohm (made famous in the Tomb Raider movie.
From a travel photography perspective, get there early to miss the heat and the crowds of people who flock every day to the complex. The complex is very large so I would suggest hiring a tuk tuk driver to get you around.