How can the Millau Viaduct be so high? What will the new façade of the Montparnasse Tower in Paris look like? So many questions with many different answers... Discover architectural projects like you've never seen them before! It takes a unique technical know-how to bring such buildings to life. Engineers, architects and builders work together to study the resistance of materials, the balance of forces and foundation techniques. Between aesthetic, functional and responsible preoccupations, this exhibition allows you to understand the stakes involved in the construction of the largest structures in the contemporary world.