The town of Cossonay is situated at the ridge of a plateau about 130 metres above the valley of the Venoge river. The Venoge river means a lot to the inhabitants of Vaud – in 1954 it was eternalised by the famous poet and chansonnier Jean Villars-Gilles.
From far away one can spot the tower of the Protestant church that overtops the old town. The alleys of the old town invite the visitors for a stroll. A funicular, which was constructed in 1897, connects Cossonay town to Penthalaz-Cossonay train station.
In Cossonay there is also a nature protection area, called Etang du Sépey. Etang du Sépey is a hatchery for amphibians of national importance. Accommodating 14 of the 18 species of amphibians that are recorded in Switzerland, it is one of Switzerland’s richest protection areas.