For 10 points, identify this location where many temples, such as the 'Wat,' were constructed by the Khmer empire in Cambodia.
An account of this location is given by Chinese ambassador Zhou Daguan. This location has two artificial, rectangular lakes called Barays, both of which include temples on islands in their centers. It served as the capital for a dynasty led by Jayavarman and Suryavarman, and it sits on the Siam Reap River. A large temple dedicated to Vishnu is found at this location, whose other archeological sites include the Preah Khan. For 10 points, identify this location where many temples, such as the 'Wat,' were constructed by the Khmer empire in Cambodia.
An account of this location is given by Chinese ambassador Zhou Daguan.
Angkor [accept Angkor Wat; accept "Khmer empire" until "artificial"]