Jean-Robert Delb's latest contribution to La Défense, the Lotus building is a simple block with one end extending at right angles. The façade is reduced to a curtain wall with blue spandrels. The building, located along the railway tracks, is adjacent to the Berkeley Building.

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, W 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.