Lake Neuchâtel is located in western Switzerland, in the Jura & Three-Lakes region. Switzerland's largest lake is a popular destination due to its charming wine-growing towns and villages (Estavayer-le-Lac, Neuchâtel, Cortaillod), protected areas, and sandy beaches.
Departing from Yverdon-les-Bains train station, the complete tour of the lake can be completed via various trails/roads, such as the Three Lakes Trail. It is also possible to do it entirely by bike
For more information : https://www.myswitzerland.com/fr-ch/destinations/lac-de-neuchatel/