Given the question: Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Perret tower (Grenoble) -  The Perret tower is an observation tower located in Grenoble in the Paul Mistral public park. It stands 95 metres (312 ft) tall about the same height as the three towers of the Île Verte in Grenoble. It was built in the field of the International Exhibition of Hydropower and Tourism where it was the orientation tower and the symbol of the exhibition.
The answer is:
Building