Project proposals and project management: the Franklin project was first studied by Robert Camelot, in association with Gérard Escande, before being entrusted by the French Land Group to Jean-Robert Delb, Michel Chesneau, and Jean Verola. The trio abandoned the protruding facade structure proposed by Camelot and opted for a double curtain wall tower.

Based on the same model as the Lake Shore Drive towers in Chicago, designed by Ludwig Mies van der Rohe, the Franklin towers are composed of aluminum structures, bronze-colored Parsol glass, and Emalit spandrels. Inside, the offices are separated by glass partitions.

Winner of the Second Grand Prix de Rome in 1957, Jean-Robert Delb (1925) founded his own agency in 1961, after several collaborations in France and Morocco. Particularly active in western Paris, he designed numerous office buildings, such as the one located at the head of the Saint-Cloud bridge. He also designed one of the largest residential towers in Paris: the Bourcy Tower in the 18th arrondissement.

In partnership with Michel Chesneau and Jean Verola, the architect designed four towers in La Défense in the 1970s: Atlantique, Europe, Winterthur, and Franklin. In 1981, he designed the Lotus building on his own, which was his last project in La Défense.

Michel Chesneau and Jean Verola, meanwhile, designed the Les Dauphins residence in 1974.