Alsace is the fifth-smallest of the 27 regions of France in land area, and the smallest in metropolitan France. Having been early and always densely populated, Alsace is famous for its high number of picturesque villages, churches and castles and for the various beauties of its three main towns, in spite of severe destructions suffered throughout five centuries of wars between France and Germany. Alsace is furthermore famous for its vineyards (especially along the 170 km of the Route des Vins d'Alsace from Marlenheim to Thann) and the Vosges mountains with their thick and green forests and picturesque lakes.