Perret tower, Observation tower in Paul Mistral Park, Grenoble, France
Perret tower is a reinforced concrete observation tower in Grenoble's Paul Mistral Park, rising to 95 meters on eight vertical pillars. Its open frame supports a circular viewing platform near the top, offering a 360-degree view over the city and the surrounding mountain ranges.
The tower was built in 1925 for the International Exhibition of Hydropower and Tourism, conceived as a demonstration of reinforced concrete as a modern construction material. It closed to visitors after 1960 due to concrete deterioration and safety concerns, and remained shut for several decades before restoration work began.
The tower takes its name from Auguste Perret, the architect who designed it and who saw concrete as a material worthy of monumental buildings. A orientation table at the top helps visitors identify the surrounding Alpine peaks by name.
The tower sits inside Paul Mistral Park, which makes it easy to combine a visit with a walk in the park. Clear days offer the best views, so mornings in winter and late afternoons in summer tend to give the sharpest sight of the mountains.
When the elevators first ran at the 1925 opening, a group of official guests got stuck inside during one of the early rides, causing quite a stir. In its early years, the tower also broadcast radio programs to the city from its top, making it one of the first structures used for wireless transmission in the region.
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