龙门石窟
The three famous ancient Buddhist sculptural sites in China are the Mogao Caves, Longmen Grottoes (672–673 for the main group) and Yungang Grottoes (460–535), all of which have colossal Buddha statues in very high relief, cut back into huge niches in the cliff, though the largest figure at Mogao is still enclosed by a wooden image house superstructure in front of it; this is also thought to be a portrait of the reigning empress Wu Zetian. One of the Longmen figures is effectively in a man-made cave, but can be seen from outside through a large window opened in the outer face (see gallery). Smaller rock-cut sculptures and paintings decorate the cave temples at these sites.