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The Emirates Spinnaker Tower is a landmark tower in Portsmouth, England, UK. It is the centrepiece of the redevelopment of Portsmouth Harbour, which was supported by a National Lottery grant. Its shape was chosen by Portsmouth residents from a selection. The tower, designed by local firm HGP Architects and engineering consultants Scott Wilson and built by Mowlem, reflects Portsmouth's maritime history through its being modelled after a sail. The tower was opened on 18 October 2005. The tower is owned by Portsmouth City Council, but operationally it is managed by Continuum Leading Attractions, a cultural attractions group based in York. Continuum also runs five other visitor attractions across the country. Following a commercial sponsorship deal with Dubai-based Emirates airline, the tower was renamed the Emirates Spinnaker Tower in July 2015. ==Structure== The tower, at a height of 170 m above sea level, is times as high as Nelson's Column, making it one of the tallest accessible structures in the United Kingdom outside London. The tower is visible for miles around Portsmouth, changing the horizon of the area. It can be seen from the Isle of Wight, the Manhood Peninsula and even Highdown Gardens in Worthing. The tower represents sails billowing in the wind, a design accomplished using two large, white, sweeping metal arcs, which give the tower its spinnaker sail design. The steelwork was fabricated by Butterley Engineering. At the top is a triple observation deck, providing a 360° view of the city of Portsmouth, the Langstone and Portsmouth harbours, and a viewing distance of . The highest of the three observation platforms, the crow's nest, has only a wire mesh roof, so visitors are open to the elements. The windows extend above head height, so it is not possible to get a view unobstructed by glass. The glass floor is the largest in Europe. The tower has a design lifetime of 80 years.〔LUSAS, 4 November 2005. (Spinnaker Tower, Portsmouth ). Retrieved 17 September 2006.〕 The design is similar to the Burj Al Arab in Dubai, whose structure is a little less than twice as tall at . 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「Emirates Spinnaker Tower」の詳細全文を読む スポンサード リンク
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