The Jet d’Eau is a large 140m-high fountain in Lake Geneva, located in the Eaux-Vives district of Geneva next to where the lake flows into the Rhône. It is one of the city’s most famous landmarks and is visible from far away. There is a walkway, the Jetée des Eaux-Vives, to get right next to the nozzle. Here is a schedule of the operating hours of the fountain.
The Cathédrale Saint-Pierre de Genève is a church in the old town of Geneva. It was built as a roman catholic church in the Middle Ages but became the adopted home church of Calvin, one of the leaders of the Protestant Reformation. Entrance to the main building is free, however access to the towers, with an open air observatory and a great view of Geneva and the lake, costs 5 Fr.