World's Tallest Buildings

The Kingdom Tower(Saudi Arabia) - 1,000 m (3,281 ft)

Kingdom Tower previously known as Mile-High Tower is a supertall skycraperapproved for construction in Jeddah,Saudi Arabia.On 2 August 2011, it was publicly announced that a contract had been signed by Saudi Bin Ladin Group as the main construction contractor with the signing of a SR4.6 billion (US$1.23 billion) contract.It was widely reported that the project was a go at the 1,000 m (3,281 ft) height with a building area of 530,000 square metres (5,704,873 sq ft) and will take 63 months to complete.Saudi Prince Al Waleed bin Talal is the head of Kingdom Holding Company (KHC), the largest company in Saudi Arabia, which owns the project
                                     
                              















The Kingdom Tower coming up in Saudi Arabia will displace the Burj Khalifa to take top spot in the list of tallest buildings in the world.






Burj Khalifa,Dubai - 828 m (2,717 ft)

Burj Khalifa (known as Burj Dubai prior to its inauguration  renamed Burj Khalifa in honour of the current President of the UAE and ruler of Abu Dhabi, Sheikh Khalifa bin Zayed al Nahyan) is a skyscraper in Dubai, United Arab Emirates, and is currently the Tallest Structure in the World, at 828 m (2,717 ft).Construction began on 21 September 2004, with the exterior of the structure completed on 1 October 2009. The building officially opened on 4 January 2010.
Burj Khalifa is part of the new 2 km² (490-acre) flagship development called 'Downtown Dubai'.The total cost for the project was about US$1.5 billion; and for the entire "Downtown Dubai" development, US$20 billion.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.The tower was constructed by South Korean company, Samsung Engineering & Construction, which also did work on the Petronas Twin Towers and Taipei 101.

Taipei 101(Taiwan) - 509.2 m (1,670.6 ft)

Taipei 101 formerly known as the Taipei World Financial Center is a skyscraper located in Taipei,Taiwan.Taipei 101 comprises 101 floors above ground and 5 floors underground.The formal opening of the tower took place on New Year's Eve 2004(December 31,2004)

 Shanghai World Financial Center(SWFC) - at 492.0 meters (1,614.2 ft)

is a skycraper at 492.0 meters (1,614.2 ft) in Pudong,Shanghai,china officially opened On 28 August 2008.

There are three Observation Decks in Shanghai World Financial Center. The height of its lowest observation deck  is 423 m (1,388 ft), on the 94th floor, the second is 439 m (1,440 ft) high, on the 97th floor, named "Observatory Bridge"  and the highest  is 474 m (1,555 ft) high, on the 100th floor.The SWFC boasts a gross floor area of more than 377,300 m² (4,061,200 sq ft) and 31 elevators and 33 escalators.

Hong Kong's International Commerce Center - 484 m (1,588 ft)
The International Commerce Centre  is a 118 Floor 484 m (1,588 ft) Skycraper completed in 2010 in West Kowloon,Hong kong.t is a part of the Union Square Project built on top of Kowloon Station The development is owned and jointly developed by MTR Corporation Ltd and Sun Hung Kai properties, Hong Kong's  Metro Operator and largest property developer respectively.

 Petronas Towers(Kuala Lumpur,Malaysia) - 451.9 m (1,483 ft)
The Petronas Towers (also known as the Petronas Twin Towers) are skycrapers and twintowers in Kuala Lumpur,Malaysia.Tower 1, the west tower (right in the top-right photograph) was built by a Japanese consortium led by the Hazama Corporation while Tower 2, the east tower (left in the top-right photograph) was built by Samsung C&T and Kukdong Engineering & Construction, both South Korean contractors.Petronas Towers were completed in 1998 after seven years of construction built on the site of Kuala Lumpur's Race Track.The 88-floor towers are constructed largely of reinforced Concrete, with a steel and glass facade designed to resemble motifs found in Islamic Art,a reflection of Malaysia's Muslim Religion.