Roluos Group was the capital of Indravarman I (877 to 889). These were the first temples built to last and are made of brick with some carved plaster reliefs. The group is made up of the three temples of Preah Ko, Bakong, and Lolei. Many of the later temples in the Angkor group are based on these earlier temples though rather than brick. 

Banteay Srei temple is located about 37km north of Siem Reap and is the most remote of the temples in the Angkor World Heritage Site. Visits to Banteay Srei can be combined with side-trips to Kbal Spean, or the Phnom Kulen National Park.