The architecture of Switzerland was influenced by its location astride major trade routes, along with diverse architectural traditions of the four national languages. Romans and later Italians brought their monumental and vernacular architecture north over the Alps, meeting the Germanic and German styles coming south and French influences coming east. Additionally, Swiss mercenary service brought architectural elements from other lands back to Switzerland. All the major styles including ancient Roman, Romanesque, Gothic, Renaissance, Baroque, Neoclassical, Art Nouveau, Modern architecture and Post Modern are well represented throughout the country. The founding of the Congrès International d'Architecture Moderne in La Sarraz and the work of Swiss-born modern architects such as Le Corbusier helped spread Modern architecture throughout the world.
The relative isolation of villages in the Alpine foothills, the Alps and the Jura mountains as well as different languages led to great diversity in the vernacular style. Due to differing traditions, climate and building materials, villages in each region are distinctly different. The Swiss chalet style, which was popular in the 19th century represents only one of a number of traditional designs. Today, due to historic preservation laws and tourism, large and small communities have retained many of their historic core buildings. Since 1972 the Swiss Heritage Society has awarded the Wakker Prize to encourage communities to preserve their architectural heritage.
