The only high-rise building in a neighborhood on a human scale, the Total Michelet Tower stands as the legacy of a plan that never came to fruition. In the early 1970s, a project for twin towers near the Franklin Tower was indeed planned. But the association of architects most active in La Défense gave rise to a hybrid building consisting of two identical towers connected by a central section.

The facades alternate between tinted glass and light-colored spandrels, emphasizing, along with the building's volume, its transgressive nature compared to other buildings.

Before becoming an architect, Henri La Fonta first tried his hand at sculpture and painting. However, his training at the École Camondo led him to architecture. In 1977, he founded his own agency, which quickly made a name for itself thanks to the creativity and conceptual rigor he demonstrated in his work. In La Défense, Henri La Fonta was the main instigator of the office building revival in the 1980s. The business district owes him Les Miroirs as well as the Pascal and Voltaire towers.

Michel Andrault (1926) and Pierre Parat (1928) joined forces in 1957 and occupied a prominent place on the French architectural scene for nearly forty years. In 1985, they entered La Défense and, like Henry La Fonta, established themselves as the most influential architects on the site. They accompanied its transformation for nearly ten years and signed several master plans. In terms of achievements, Michel Andrault and Pierre Parat participated in a dozen projects, including the restructuring of the CNIT and the Société Générale towers.

Jean Willerval (1924-1996) began his career in 1959, mainly in Nord-Pas-de-Calais, his native region. His first notable works include the Saint-Jean-Bosco church in Mons-en-Baroeul and the courthouse in Lille. In La Défense, Jean Willerval began with a project that ranked first in the consultation for Tête Défense in 1980 but was never realized. In 1984, he returned to the prisms of the 1920s for the Allianz One tower. That same year, he co-designed the Descartes tower with Fernando Urquijo and Giorgio Macola. In association with Bernard Lamy, he took charge of the Gan Eurocourtage tower. After a long interruption, this project was taken over by his son, Bruno Willerval.