From Wikipedia: https://en.wikipedia.org/wiki/Jet_d%27Eau

The Jet d'Eau, Water-Jet is a large fountain in Geneva, Switzerland and is one of the city's most famous landmarks, being featured on the city's official tourism web site and on the official logo for Geneva's hosting of group stage matches at UEFA Euro 2008. Situated where Lake Geneva exits as the Rhône, it is visible throughout the city and from the air, even when flying over Geneva at an altitude of ten kilometres (33,000 ft).