Lac de Neuchâtel is the largest lake located entirely in Switzerland, covering an area of about 218 square kilometers. It is situated in the Neuchâtel region and is known for its beautiful scenery, surrounded by hills and vineyards. The lake is a popular destination for outdoor activities such as swimming, sailing, and fishing. The lake is fed by several rivers, including the Thielle and Areuse, and drains into the Aare River. Its maximum depth is approximately 152 meters. The surrounding area is rich in history, with charming towns like Neuchâtel and Yverdon-les-Bains offering cultural attractions and picturesque views.