The “Banneret Wisard” farmhouse in Grandval, dating from 1535, is one of the oldest buildings in Switzerland and the oldest farm of the Bernese Jura. A real living museum, it is one of the last smokehouses still in use: meat is smoked and bread and pies are made in the wood-fired oven. The guided tours, available on request, allow the visitor to fully appreciate the construction. They take the visitors through the building and its history. The activity of the smokehouse and the development of the plants in the garden give a glimpse of the work carried out through the seasons.