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The Jet d'Eau is a large fountain in Geneva, Switzerland, and is one of the city's most famous landmarks. It is also one of the largest fountains in the world. Situated at the point where Lake Geneva empties into the Rhône, it is visible throughout the city and from the air.  Five hundred litres (132 gallons) of water per second are jetted to an altitude of 140 metres (459 feet).  The water leaves the nozzle at a speed of 200 km/h (124 mph). When it is in operation, at any given moment there are about 7,000 litres (1849 gallons) of water in the air. Unsuspecting visitors to the fountain—which can be reached via a stone jetty from the left bank of the lake—may be surprised to find themselves drenched after a slight change in wind direction.Geneva, Switzerland, Europe