Sécurité sociale tower, Brutalist office tower in Colombier district, Rennes, France
The Sécurité sociale Tower is an office building in Rennes reaching 65.73 meters high with 19 floors of concrete and continuous window rows on each level. The structure shapes the cityscape in the Colombier district near the Esplanade Charles de Gaulle.
The building opened in 1965 following architect Paul Pothier's design and marked a turning point in Rennes' urban development. This administrative headquarters shaped the modernization of the city center during the postwar era.
The tower symbolizes French administrative architecture from the 1960s and shapes the city center as the headquarters for social security services. Its robust concrete form reflects the era's vision of modern work and state presence in the urban landscape.
The building sits in a central location at the edge of the Colombier district, easily reached from the Esplanade Charles de Gaulle. Cinema screens operate at its base, and the nearby Le Liberté performance venue makes planning a visit straightforward.
The building stands as the tallest office structure in Rennes and keeps its original concrete exterior from 1965 intact. Its upper section houses technical systems integrated into the brutalist design.
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