The Grande Cariçaie
It's the biggest lake marsh of Switzerland. Walks or rides on the roads going trough the nature reserves, will make you discover a wildlife with unsuspected and unlimited resources.
It hosts 8 nature reserves mostly accessible by foot or bicycle. The nature-centre of Champ-Pittet (Yverdon-les-Bains) and La Sauge (Cudrefin) are excellent places to discover the flora, the fauna and the preserved landscapes of the reserves.
You'll also make great discoveries by walking or riding on the 40km roads that crosses the reserves with information and observation points.