Preah Ko
Preah Ko, meaning "Sacred Bull", is the oldest temple in the Roluos Group and the first temple built in the ancient Khmer capital of Hariharalaya. Consecrated in 879 by King Indravarman I in honor of his ancestors. It features six brick towers arranged in two rows, and three Nandi bull statues in front of the towers. Well-preserved stucco reliefs demonstrate the artistry of early Khmer craftsmen