Banteay Srei, or the citadel of the women, was built by Rajendravaman II in the mid 10th century. It is Hindu, and is dedicated to Shiva. Here are the most intricate sanstone reliefs in Angkor.
TA PROHM
Ta Prohm was my favorite site at Angkor because of the state in which it has been left. There are huge trees going out of the tops of the temples. Ta Prohm was built by Jayavarman VII in the mid 13th century, and is Buddhist.