Wulingyuan Scenic and Historic Interest Area is a UNESCO World Heritage Site in Hunan Province, China designated in 1992. It's noted for more than 3,000 quartzite sandstone pillars and peaks across most of the site, many over 200 metres (660 ft) in height, along with many ravines and gorges with attractive streams, pools and waterfalls. It features 40 caves, many with large calcite deposits, and two natural bridges, Xianrenqias (Bridge of the Immortals) and Tianqiashengkong (Bridge Across the Sky).