Lausanne was once an intellectual capital, attracting such great thinkers as Rousseau and Voltaire. Today it is a haven for lovers of water skiing, swimming and sailing. The International Olympic Committee even has its headquarters here. The town's history is evident, though, in its medieval cathedral, the museums of the Palais de Rumine, and Ouchy, the port where Lord Byron wrote "The Prisoner of Chillon" and the Treaty of Lausanne was ratified. For great views, hike up to the Signal de Sauvabelin.