THE WORLD TALLEST BUILDING～pics and description

Burj Khalifa , known as Burj Dubai prior to its inauguration, is a
skyscraper in Dubai, United Arab Emirates, and is the tallest man-made
structure in the world, at 829.8 m (2,722 ft).
Construction began on 21 September 2004, with the exterior of the
structure completed on 1 October 2009.
The building officially opened on4 January 2010 and is part of the new
2 km2 (490-acre) development called Downtown Dubai at the 'First
Interchange' along Sheikh Zayed Road, near Dubai's main business
district. The tower's architecture and engineering were performed by
Skidmore, Owings and Merrill of Chicago, with Adrian Smith as chief
architect, and Bill Baker as chief structural engineer.The primary
contractor was Samsung C&T of South Korea.
In March 2009, Mohamed Ali Alabbar, chairman of the project's
developer, Emaar Properties, said office space pricing at Burj Khalifa
reached US$4,000 per sq ft (over US$43,000 per m²) and the Armani
Residences, also in Burj Khalifa, sold for US$3,500 per sq ft (over
US$37,500 per m²). He estimated the total cost for the project to be
about US$1.5 billion.
Burj Khalifa was designed to be the centerpiece of a large-scale,
mixed-use development that would include 30,000 homes, nine hotels
(including The Address Downtown Dubai), 3 hectares (7.4 acres) of
parkland, at least 19 residential towers, the Dubai Mall, and the
12-hectare (30-acre) man-made Burj Khalifa Lake.
The building has returned the location of Earth's tallest freestanding
structure to the Middle East, where the Great Pyramid of Giza claimed
this achievement for almost four millennia before being surpassed in
1311 by Lincoln Cathedral in England.
The decision to build Burj Khalifa is reportedly based on the
government's decision to diversify from an oil based economy to one
that is service and tourism based. According to officials, it is
necessary for projects like Burj Khalifa to be built in the city to
garner more international recognition, and hence investment.

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