A flock of starlings flies over Lake Leman on an autumn morning in the Lavaux near Grandvaux, Switzerland October 20, 2016. (Photo by Denis Balibouse/Reuters)
Located in East Java, Indonesia, Kawah Ijen is a volcano is home to the largest acidic crater lake in the world. What turns the waters of the lake in the 1 km caldera its beautiful turquoise color are the highly sulfuric gases emitted from the volcano underneath.
Growing cities, overuse of fertilizers and factory wastewater have degraded China's water supplies to the extent that half the nation's rivers and lakes are severely polluted. China aims to spend $850 billion to improve filthy water supplies over the next decade, but even such huge outlays may do little to reverse damage caused by decades of pollution and overuse in Beijing's push for rapid economic growth. Photo: Fishermen row a boat in the algae-filled Chaohu Lake in Hefei, Anhui province, June 19, 2009. (Photo by Jianan Yu/Reuters)
The Tateyama Kurobe Alpine Route is an international mountain sightseeing route some 90 kilometers (56 miles) long. The route goes across the 3,000-meter-high North Alpine mountains, the so-called “roof of Japan,” and connects Toyama and Shinano Omachi. You can enjoy the panorama by taking a train, highland bus, trolley bus, cable car, and ropeway. Since the lines opened in June 1971, the Tateyama mountain area has been transformed from an isolated spot into one of the nation’s best sightseeing areas, where a million guests visit every year.
Lake Baikal is the world's oldest lake, at 25 million years (possibly older), and deepest, averaging 744.4 metres (2,442 ft).
Located in the south of the Russian region of Siberia, between Irkutsk Oblast to the northwest and the Buryat Republic to the southeast, it is the most voluminous freshwater lake in the world, containing roughly 20% of the world's unfrozen surface fresh water.
The Marble Caves of Patagonia, Chile, are beautiful vibrant blue caverns, partially submerged in the equally stunning turquoise waters of Carrera Lake. The lake itself is on the border of Argentina and Chile, with the caves located on the Chilean side. The caves are comprised of three main caverns: the Chapel (La Capilla), the Cathedral (El Catedral), and the Cave (La Cueva). Visitors to the caves can explore them in a small boat or kayak, but only when Carrera Lake’s waters are calm and gentle. A rare and invaluable natural wonder, the existence of these caves is currently threatened by plans to build five large dams in the area. If you visit these caves, please treat them with the utmost respect and care.