 Image courtesy of Tobu Tower Sky Tree Company  Image courtesy of Tobu Tower Sky Tree Company
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Tokyo Sky Tree
Tokyo returns to the world's architectural stage with this massive broadcasting tower, scheduled for completion in 2011. It will rise above what was the Tobu Railway Company's rail yard in Sumida Ward. Discussions about a new broadcast tower have been ongoing for years, but it wasn't until 2006 that Tokyo's major broadcasting companies and the national broadcaster, NHK, agreed on this plan.
This tower will carry antennae for Tokyo radio and television stations, which are currently at the top of Tokyo Tower. However, Tokyo Tower is quickly being surrounded by massive skyscrapers which cause mutltipath and other problems with radio signals. The new tower will allow the broadcasters to locate their transmitters at a higher point to alleviate the congestion. As part of the move to the new tower, the broadcasters will abandon their analog facilities and move to pure digital operation.
Unlike the current Tokyo Tower, the base of Tokyo Sky Tree will be more than an expanse of asphalt with some scraggly gardens and minor amusement facilities. It is envisioned as an entire urban working, shopping, transportation, and community center, right beneath the tower, helping better utilize the available space.
Of course, the real star of the show is the tower, itself. Rising from a triangular-shaped lobby with a large arch on each side, the core of the building will be surrounded by a lattice work of structural steel. As the building rises, the core changes to a circular shape by the time it reaches the first observation level. The second level is 330 feet higher, but smaller. This is topped by the continuing steel cone and eventually a master television antenna.
- First observatory height: 1,148 feet
- Second observatory height: 1,476 feet
- June 10, 2008: The name of this building is changed from New Tokyo Tower to Tokyo Sky Tree.
- December, 2010: Anticipated date of construction completion.
- July, 2011: Anticipated opening to the public.
- This building is designed to be extra earthquake-resistant because it will serve as a vital communications relay during disasters.
- A triangular-shaped lobby was chosen because it has three sides -- the smallest number possible for a self-supporting structure. They also symbolize the confluence of the Sumida River, the Ara River, and the bustle of human traffic.
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