Ban Gioc – Detian Falls are two waterfalls on the Quây Sơn River, in Chinese Guichun River, straddling the Sino-Vietnamese border, located in the Karst hills of Daxin County, Guangxi (Chinese side), and in Trùng Khánh District, Cao Bằng province on the Vietnamese side, 272 km (169 mi) north of Hanoi. In Vietnamese, the two falls are considered as two parts of one waterfall with the sole name Bản Giốc. The two parts are called as: thác chính (Main waterfall) and thác phụ (Subordinate waterfall). Chinese texts sometimes name both falls from the Détiān falls on the Chinese side. During the summer rains the two waterfalls may join together.

Guatapé is a town and municipality in Antioquia Department, Colombia. Part of the subregion of Eastern Antioquia. Guatapé is located in the outskirts of Medellín, bordering a reservoir created by the Colombian government for a hydro-electric dam, built in the late 1960s. This quaint town is the gathering place for "Las Vegas", or the small farms of the area. It is also a growing area of recreation for citizens of Medellín, and aims to be a tourist destination for foreign travellers.
Guatapé was founded in 1811, by the Spaniard Don Francisco Giraldo y Jimenez. The name "Guatapé", comes from the Quechua language, related to "stones and water". The area was visited by the conquistadors circa 1551.

A police officer gives instructions to migrants rushing to board a train that would take them towards Serbia, at the railway station in the southern Macedonian town of Gevgelija, Wednesday, August 20, 2015. Macedonian police stepped up the security at the border with Greece apparently trying to stem recent surge of migrants who are coming from Greece. (Photo by Darko Vojinovic/AP Photo)

People take a selfie at the abandoned former Soviet R12 nuclear missile launch site in Zeltini, Latvia, July 22, 2016. Hidden in the forests of Aluksne, near Latvia's north-eastern border with Russia, the remains of a former Soviet nuclear missile base are a magnet for tourists now rather than a top-secret site manned by soldiers. (Photo by Ints Kalnins/Reuters)

Local residents evacuate onto a street minutes after an earthquake in central Kathmandu, Nepal, May 12, 2015. A 7.3 magnitude earthquake killed at least 37 people and spread panic in Nepal on Tuesday, bringing down buildings already weakened by a devastating tremor less than three weeks ago and unleashing landslides in Himalayan valleys near Mount Everest. The earthquake was centered 76 km (47 miles) east of the capital in a hilly area close to the border with Tibet, according to coordinates provided by the U.S. Geological Survey. (Photo by Athit Perawongmetha/Reuters)

A Turkana boy herds cows as he carries a rifle in north western Kenya near the town of Kibish inside the Turkana region of the Ilemy Triangle September 26, 2014. The Turkana people have historically clashed over ethnic differences and precious resources such as fishing, pasture and fresh water with other tribes bordering their territory, such as the Dassanach from southern Ethiopia. (Photo by Goran Tomasevic/Reuters)

“Pripyat is a ghost town near the Chernobyl Nuclear Power Plant, within the Chernobyl Exclusion Zone, part of Kiev Oblast (province) of northern Ukraine, near the border with Belarus”. – Wikipedia

Photo: A view of empty houses in the deserted town of Pripyat near the closed Chernobyl nuclear power plant Ukraine, November 27, 2012. Pripyat, the city of 47,000 had already been evacuated after the April 26, 1986, explosion of Reactor No. 4 (Photo by Efrem Lukatsky/AP Photo)

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Lake Natron is a salt lake located in northern Tanzania, close to the Kenyan border, in the eastern branch of the East African Rift. The lake is fed by the Southern Ewaso Ng'iro River and also by mineral-rich hot springs. It is quite shallow, less than three meters (10 feet) deep, and varies in width depending on its water level, which changes due to high levels of evaporation, leaving concentrations of salt and other minerals, notably sodium carbonate (natron).