Banteay Srei, a small but intricately decorated temple about 20 km away from the main complex. One of my favorites.
Banteay Srei, built by one of Rajendravarman’s counsellors in the late 900’s, is unique among the temples of Angkor. It is built of pink sandstone (not the regular black-and-white sandstone used for the other temples), and features small, delicate temples full of exquisitely detailed carving. Because pink sandstone is harder than the regular sandstone, the carvings have weathered much better than at the other temples.,
This temple is about 20 kilometers away from the Angkor Thom complex (which also contains Angkor Wat), but is well worth the trip–don’t miss it if you go to Angkor. Banteay Srei, together with Ta Prohm, were my two favorite temples in the trip.