The Unbuilt 'Endless Tower' of La Défense
In the late 1980s, France designated a plot of land near the Grande Arche in La Défense, known as the 'Triangle de la Folie' (Triangle of Madness), for the construction of a new building.
This plot was surrounded by roads, railways, a cemetery, and existing modern buildings, making it less than ideal for development.
Ultimately, Jean Nouvel's proposal was selected. His vision was not just an ordinary skyscraper but a structure imbued with philosophical meaning—the Tour Sans Fins, or the Endless Tower.
From a grammatical perspective, the name should have been 'Tour sans fin,' with 'fin' in the singular form, indicating a line extending endlessly in one direction. However, 'fins' in the plural suggests boundlessness in multiple directions, with no limits at any endpoint.
This concept was central to the Endless Tower's design. Its base was hidden underground, and its top disappeared into the clouds.
The tower's foundation extended 25 meters below ground, resembling a stake driven into the Earth's core and emerging at the surface. The materials used for the upper structure changed with height—granite, mica, reflective glass—and culminated in fully transparent glass at the top, blending seamlessly into the sky to create a visual effect of infinite extension.
Had it been built, the tower would have been the tallest building in Europe at the time, standing 425-426 meters tall with approximately 100 floors. It was designed to house offices, conference centers, parking facilities, and observation spaces.
With a diameter of just 42 meters, the tower was an exceptionally slender cylinder, a deliberate response to its 'neighbors.'
The CNIT building is triangular, the Grande Arche is a square frame, and the Endless Tower was envisioned as a slender cylindrical column piercing the ground. Together, they would have formed a harmonious geometric ensemble.
After winning the bid, the engineering team conducted years of evaluations and in-depth studies on the Endless Tower. Contractors for the façade, elevators, and mechanical systems were selected. However, in the early 1990s, France and Europe faced a real estate slump, economic crisis, and financing difficulties. A 400-meter-tall skyscraper with complex technology and massive investment was deemed too risky. The project was shelved and eventually canceled.
Later, the 'Triangle de la Folie' was developed into a cluster of low-rise office buildings. Jean Nouvel, meanwhile, grew into a world-renowned architect, designing landmarks such as the Musée du Quai Branly in Paris and the Louvre Abu Dhabi. Yet, his connection with La Défense always seemed just out of reach.
After the Endless Tower, he won the bid for the 'Tour Signal,' but the project was abandoned in 2010 due to a lack of investors.
He then turned his attention to Paris proper, designing the 'Tours Duo,' a pair of 'twisting' towers on the edge of the 13th arrondissement.
Finally, in December 2022, Nouvel made his long-awaited return to La Défense with the completion of the Tour Hekla. This marked the end of a journey that began over three decades earlier with the unfulfilled dream of the Endless Tower.