Those formerly gold-covered towers were described by emissary Zhou Daguan upon his visit to this empire's city of Bayon.
This empire's most prolific leader established its capital at Roluos, where he ordered the construction of a namesake group of temples with monasteries. One leader of this empire engineered the successful capture of the Mon Empire, whose previous incarnation, the Funan Empire, had sparred unsuccessfully with Chendla. A religious complex constructed in this empire features "face towers" that show a smiling king. Those formerly gold-covered towers were described by emissary Zhou Daguan upon his visit to this empire's city of Bayon. A switch from primarily worshipping Shiva to worshipping Vishnu came about during the reign of this empire's King Suryavarman II, who constructed a temple complex called Angkor Wat. For 10 points, name this empire whose land now comprises much of Cambodia, and which gives its name to a Communist party led by Pol Pot.
This empire's most prolific leader established its capital at Roluos, where he ordered the construction of a namesake group of temples with monasteries.
Khmer Empire [do not accept "Khmer Rouge"]