The Old Town of Lausanne has imposing buildings dating back to the Middle Ages, such as the famous Cathedral of Notre-Dame. The charming city on Lake Geneva has a lot to offer otherwise as well. For instance, Switzerland's first subterranean mountain train.
Chillon Castle is located on a rock on the banks of Lake Geneva. The water castle is the most visited historic building in Switzerland. For nearly four centuries Chillon was the residence and profitable toll station of the Counts of Savoy.