Tucked among the trees in the forest outside of Cheongsong, South Korea, this small body of water has drawn visitors from all over the world. Jusanji Pond is an artificial pond created in 1720 in a forested area that in 1976 became the Juwangsan National Park. The pond was built to serve as a reservoir that could provide a steady supply of fresh water to the lower agricultural land. It’s fairly diminutive, by most standards. When full, Jusanji Pond measures 100 meters (328 feet) in length and 50 meters (164 feet)…