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Sky City 1000
Skycity1000 01.jpg
Tokyo's proposed Sky City 1000
General information
Location Tokyo, Japan
Status Vision
Use Mixed Use
Roof 1,000 Meters
Technical details
Floor count 196[1]
Floor area 8 square kilometres
Companies involved
Architect(s) N/A
Developer Takenaka Corporation

Sky City 1000 is a possible future urban supertall skyscraper project aimed at helping put an end to major congestion and lack of greenspace in the Tokyo, Japan metropolitan area.

The plan consists of a building 1,000 metres (3,281 ft) tall and 400 m (1,312 ft) wide at the base, and a total floor area of 8 km2 (3.1 sq mi).[2] The design, proposed in 1989 by Takenaka Corporation, would house between 35,000[2][3] and 36,000[4] full-time residents, as well as 100,000 workers. It comprises 14 concave dish-shaped "Space Plateaus" stacked one upon the other. The interior of the plateaus would contain greenspace, and on the edges, on the sides of the building, would be the apartments. Also included in the building would be offices, commercial facilities, schools, theatres, and other modern amenities.[2]

Since its announcement, it has garnered a lot of attention from the world's architectural establishment, and was featured on CNN's This Week in Japan in 1989, and on Discovery Channel's Extreme Engineering in 2003.

With the completed Burj Khalifa topping out at 828 meters in December 2009, researchers have started to speculate that a 1000-meter building such as Sky City 1000 could be possible in the next 20 years. [1]

Land prices in Japan are the highest in the world, and Kisho Kurokawa, one of Japan's most famous architects, has said that even staggeringly ambitious buildings employing highly sophisticated engineering are still cheap, because companies pay 90% of the cost for the land and only 10% for the building.[5] Tokyo's only fire 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.[2] Triple-decker high speed elevators which would be used in the building are also being designed in labs outside Tokyo.[2]

Although this project has gained more serious attention than many of its alternatives, it can be considered similar to projects such as X-Seed 4000 and to ultra-high density, mixed use concepts such as Paolo Soleri's Arcology and Le Corbusier's Radiant City.

See also


  1. ^ Sky City 1000 - SkyscraperPage
  2. ^ a b c d e Sky City 1000 - Emporis
  3. ^ Discovery Channel :: Extreme Engineering: Sky City
  4. ^ SKY CITY 1000
  5. ^ Cities in the sky: New Scientist, October 2, 1993



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