密云水库位于北京市密云县城北13公里处燕山群山丘陵之中,是亚洲最大的人工湖,有“燕山明珠”之称。密云水库以山灵水秀,景象万千,大坝巍峨,湖面辽阔而吸引游人,库旁的各式建筑,隐现在青山绿水之中,恰似仙宫琼阁。水库白河大坝西北有一座海拔900多米高的山峰,名叫五座楼筑,有五座烽火台,气势雄浑。围绕水库还有一条110公里长的环湖公路,是京东著名的旅游风景区之一。库区空气中负氧离子含量高于市区40倍,空气质量常 Miyun Reservoir is located in Miyun County, Beijing, 13 kilometers north of the Yanshan hills, is Asia’s largest artificial lake, “Yanshan Pearl,” said. Miyun Reservoir to Lingling, spectacular, towering dam, lake and attract tourists, library next to all kinds of buildings, now hidden in the mountains and rivers, just like Sin Gong Joan Court. Northwest dam reservoir dam has an elevation of more than 900 meters high mountain, named five buildings, there are five beacon towers, magnificent momentum. Around the reservoir there is a 110 km long road around the lake, Jingdong is one of the famous tourist attractions. Negative oxygen ion content in the air in the reservoir area is 40 times higher than that in the urban area, and the air quality is often high