It is a monumental project that should see the light of day in 2025, the famous sister towers designed by Christian de Portzamparc.

Skyscrapers in Paris

The Sister towers is the name of a skyscraper project located in Courbevoie in the business district of La Défense (Hauts-de-Seine, France), consisting of a 229-meter office tower and a hotel high connected by a walkway. Construction is expected to begin in 2022, with completion scheduled for 2025. The two towers must overflow the polygon, formed by the possible locations of their foundations. Presented as three curved leaves seeming to spring from the ground, the towers work like consoles flaring out to a great height and resonating with the curvature of the CNIT shell. They are covered by a protective skin of screen-printed glass with fine white lines allowing the view to pass but filtering the UV.

A panoramic view of Paris

The office building created by Christian de Portzamparc benefits from an elongated plan that favors naturally lit spaces and limits second-day spaces. The position of the building is exceptional but the basement, occupied by the railway tracks, determines the constructability and the very form of the project. Between the towers, a building-bridge crosses the Carpeaux footbridge and houses an auditorium, a restaurant opening onto terraces, a fitness center and a swimming pool as well as a restaurant-bar with a unique suspended viewpoint, halfway up the surrounding towers, revealing a spectacular panoramic view of Paris and La Défense.