The Jet d'Eau (water jet) in Geneva, Swizerland, is one of the city’s most famous landmarks. At 140 metres (459 feet) it is one of the largest fountains in the world.
Originally it was a safety valve for a hydraulic power network and could reach a height of about 30 metres (98 feet). In 1891, its aesthetic value was recognised and a new version was built to celebrate the Federal Gymnastics Festival and the 600th anniversary of the Swiss Confederation. The present Jet d'Eau was installed in 1951 in a partially submerged pumping station to pump lake water instead of city water.