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The Perret tower, also named the "Tower to look at the mountains", is an observation tower located in Grenoble, in the Paul Mistral public park. It is the first tower built in reinforced concrete in Europe.〔 (Tour Perret - Grenoble ) patrimoine-en-isère.fr〕 In 1998, it was officially declared to be an national heritage site. It was built in the field of the International Exhibition of Hydropower and Tourism〔 (Modern and contemporary heritage )〕 where it was the orientation tower and the symbol of the exhibition. Nowadays, it's the last vestige of this exhibition.〔 ==Architecture== Perret tower stands tall. Its section is octagonal. Its foundations are long, made of 72 vertical stakes in reinforced concrete〔 gathered at the top by a slab and placed on a hard gravel layer. The framework is compound of eight vertical poles.〔 The tower diameter is at the base. The last floor is reachable by helical stairs (visible in the top openwork part) or by lift.〔 Auguste Perret, with the assistance of Marie Dormoy, art critic, came to Grenoble for two years, to do conferences and meet political and artistic circles in order to show its "reinfored concrete order"; a reference to the antique orders. Made of the first reinforced concrete, it is also the first free project made by Auguste Perret, its architect. The tower is the sum of an architectural and structural thought particularly modern and exact. It is a reinforced concrete structure whose formworks are modular and repetitive, and the prefabricated fillings are re-used from the "Notre-Dame du Raincy" church. It provoked all criticisms during its construction but it is a success which cost half as much as the other edifices of the exhibition. Also named orientation tower, not because the four cardinal directions are molded at its top but because an orientation table asked by the Touring club de France, encircles it at the level. This orientation table allowed tourists to locate the surrounding mountains with the pleasure to show a unique panorama on the Alps〔 and Grenoble because its height is about the same as the three towers of the Île Verte in Grenoble. So, it is one of the highest buildings in Grenoble. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Perret tower (Grenoble)」の詳細全文を読む スポンサード リンク
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