The Palace of Versailles ( a half hour outside of Paris ) is one of the world's grandest historical museums.
The Palace of Versailles began as a modest hunting lodge. Well, as modest a lodge as one could expect from a French King. Then Louis XIV enlarged and enrobed the old lodge, turning it into the great Chateau we know today. In 1837, Louis-Philippe converted the whole deal to a museum of French History in what may have been the historic starting point for the development of mass tourism.
World war was ended here with the signing of the Treaty of Versailles.