| Sky City 1000 | |
|---|---|
スカイシティー1000 | |
 Proposed Rendering of the megatall Sky City 1000 | |
| General information | |
| Status | Construction scheduled |
| Type | Hotel, office,residential |
| Location | Tokyo,Japan |
| Construction started | 2040+ |
| Estimated completion | unknown |
| Height | |
| Roof | 3,281 ft (1,000 m)[1] |
| Technical details | |
| Floor count | 196[2] |
| Floor area | 8 km2 |
| Design and construction | |
| Architect(s) | Takenaka Corporation |
Sky City 1000 is a proposed skyscraper for theTokyo metropolitan area. It was announced in 1989 at the height of theJapanese asset price bubble.
The proposal consists of a building 1,000 m (3,281 ft) tall and 400 m (1,312 ft) wide at the base, with a total floor area of 8 km2 (3.1 sq mi).[3] The design, proposed in 1989 by theTakenaka Corporation, would have housed between 35,000[3][4] and 36,000[5] full-time residents as well as 100,000 workers. It comprised 14 concave dish-shaped "Space Plateaus" stacked one upon the other. The interior of the plateaus would have contained greenspace, and the edges of the building would have contained apartments. The building would have also housed offices, commercial facilities,schools,theatres, and other modern amenities.[3]
The Sky City was featured onDiscovery Channel'sExtreme Engineering in 2003.
Land prices in Japan were the highest in the world at the time, butKisho Kurokawa, one of Japan's most famous architects, has said that staggeringly ambitious buildings employing highly sophisticated engineering are still cheap, because companies pay 90 percent of the cost for the land and only 10 percent for the building.[6] Tokyo's onlyfire helicopter has even been used in simulation tests to see what the danger would be if a fire were to break out in the building.[3] To mitigate this, triple-decker high speedelevators were proposed and prototyped in labs outside Tokyo.[3]
Although the Sky City gained more serious attention than many of its alternatives, it was never carried out, similarly to projects such asX-Seed 4000 and to ultra-highdensity,mixed use concepts such asPaolo Soleri'sArcology andLe Corbusier'sVille Radieuse.
If completed, Sky City 1000 would be the tallest man-made structure in the world surpassing theBurj Khalifa.