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Origin and history

The Perret Tower, located in the Parc Paul-Mistral in Grenoble, is an architectural feat designed by Auguste Perret in 1924. It is 93 metres high and of octagonal section, and rests on foundations of 15 metres composed of 72 piles of reinforced concrete. Its visible frame, without decoration except the molded cardinal dots at the top, enhances the raw material thanks to wooden forms leaving visible traces. The tower served as a point of orientation during the International Exhibition of White Coal and Tourism of 1925, where it welcomed visitors via an elevator or 550 steps.

The building, initially criticized for its lightness and hollow structure, was defended by Auguste Perret, who recalculated before experts to prove its strength. Costing 385,000 francs at the time, it became a symbol of modernity and sustainability, despite initial fears. During the exhibition, it was equipped with a projector illuminating the buildings and served as a central landmark for visitors, with an orientation table at a height of 60 metres.

After 1960, the tower was closed to the public because of its disrepair, caused by the oxidation of the frames and the absence of maintenance. Ranked a historic monument in 1998, it was the subject of numerous studies and mobilizations for its restoration, notably carried by the architect Cédric Avenier and the association Ensemble pour la tour Perret de Grenoble. The work began in 2023 and includes innovative techniques such as cathodic protection and jet grouting, with a reopening planned for 2026.

The Perret Tower embodies the technical innovation of reinforced concrete and the industrial heritage of Isère, the then leading region in cement production. Its history also reflects the challenges of preserving modern heritage, between technical issues and citizen mobilization. Today, it remains an emblem of the French Alps and a testimony of the 20th century architectural avant-garde.

In 2024, as it approaches its centenary, the tower still inspires, as evidenced by the Grenoble Foot 38 jersey celebrating its anniversary. A museum dedicated to its history is also planned as part of the restoration work, strengthening its anchor in local memory and national architectural heritage.

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