The results of the economic prosperity seen in post-war Switzerland are easily recognizable in Lausanne’s city structure. Major companies use construction to show their importance. Examples include the buildings of Vaudoise Assurances and the André group, as well as the Edipresse tower. The architecture was well-planned, the materials carefully selected, and the use of concrete allowed brave decisions. The 1964 National Exposition was the key event for the city in this period, leading it to modernize its infrastructures.