Top Ten Tallest Buildings in the world

1.Burj Khalifa

Burj Khalifa  known as Burj Dubai before its inauguration, is a megatall skyscraper in Dubai, United Arab Emirates. It is the tallest artificial structure in the world, standing at 829.8 m (2,722 ft).

Construction of Burj Khalifa began in 2004, with the exterior completed in 2009. The primary structure is reinforced concrete. The building opened in 2010, as part of the new development called Downtown Dubai. It is designed to be the centerpiece of large-scale, mixed-use development. The decision to build the building is reportedly based on the government's decision to diversify from an oil-based economy, and for Dubai to gain international recognition. The building was named in honor of the ruler of Abu Dhabi and president of the United Arab Emirates, Khalifa bin Zayed Al Nahyan; Abu Dhabi and the UAE government lent Dubai money to pay its debts. The building broke numerous height records.

Burj Khalifa was designed by Adrian Smith then of Skidmore, Owings and Merrill (SOM), whose firm also designed the Willis Tower and the One World Trade Center. Hyder Consulting was chosen to be the supervising engineer with NORR Group Consultants International Limited chosen to supervise the architecture of the project. The design of Burj Khalifa is derived from patterning systems embodied in Islamic architecture, incorporating cultural and historical elements particular to the region such as the spiral minaret. The Y-shaped plan is designed for residential and hotel usage. A buttressed core structural system is used to support the height of the building, and the cladding system is designed to withstand Dubai's summer temperatures. A total of 57 elevators and 8 escalators are installed, with the elevators having a capacity of 12 to 14 people per cabin.

Critical reception to Burj Khalifa has been generally positive, and the building received many awards. However, the labor issues during construction have been controversial, since the building was built primarily by workers from South Asia and East Asia, who earned low wages and were reportedly housed in poor conditions.

2.Shanghai Tower 

The Shanghai Tower  is a megatall skyscraper in Lujiazui, Pudong, Shanghai. Designed by Gensler and owned by a consortium of Chinese state-owned companies, it is the tallest of a group of three adjacent supertall buildings in Pudong, the other two being the Jin Mao Tower and the Shanghai World Financial Center. The building is 632 metres (2,073 ft) high and has 128 stories, with a total floor area of 380,000 m² (4,090,000 sq ft). Its tiered construction, designed for high energy efficiency, provides multiple separate zones for office, retail and leisure use. The Shanghai Tower was completed in the summer of 2015.

Construction work on the tower began in November 2008. Following its topping out on 3 August 2013, the Shanghai Tower is currently the tallest building in China and the second-tallest in the world, surpassed only by the Burj Khalifa in Dubai. It was scheduled to open to the public in June 2015, but this has not happened as of late November 2015 It is also China's tallest structure of any kind, surpassing the 600-metre (1,969 ft) Canton Tower in Guangzhou completed in 2010.

3. Abraj AL-Bait Clock Tower

The Abraj Al-Bait Towers, also known as the Makkah Royal Clock Tower Hotel, is a government-owned megatall building complex in Mecca, Saudi Arabia. These towers are a part of the King Abdulaziz Endowment Project that strives to modernize the city in catering to its pilgrims. The central hotel building has the world's largest clock face and is the third tallest building and fourth tallest freestanding structure in the world. The building complex is metres away from the world's largest mosque and Islam's most sacred site, the Masjid al-Haram. The developer and contractor of the complex is the Saudi Binladin Group, the Kingdom's largest construction company. The complex was built after the demolition of the Ajyad Fortress, the 18th-century Ottoman citadel which stood atop a hill overlooking the Grand Mosque. The destruction of the fort in 2002 by the Saudi government sparked Turkish and international outcry.

4.Ping An Finance Centre

Ping An International Finance Centre (also known as the Ping An IFC) is a 115-story megatall skyscraper under construction in Shenzhen, Guangdong province, China. The building was commissioned by Ping An Insurance and designed by the American architectural firm Kohn Pedersen Fox Associates. It is expected to be completed in 2016, thus becoming the 4th tallest building in the world

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5.Goldin Finance 117

Goldin Finance 117, also known as China 117 Tower,  is a skyscraper under construction in Tianjin, China. The tower is expected to be 597 m (1,959 ft) with 117 storeys. Construction began in 2008, and the building was scheduled to be completed in 2014, becoming the second tallest building in China, surpassing the Shanghai World Financial Center. In late January 2010 it was announced that construction had been suspended. Construction resumed in 2011, with completion estimated in 2017.

6.One World Trade Center

One World Trade Center (also known as 1 World Trade Center, One WTC and 1 WTC; the current building was dubbed the "Freedom Tower" during initial basework) is the main building of the rebuilt World Trade Center complex in Lower Manhattan,New York City. It is the tallest skyscraper in the Western Hemisphere, and the sixth-tallest in the world. The supertall structure has the same name as the North Tower of the original World Trade Center, which was completely destroyed in the terrorist attacks of September 11, 2001. The new skyscraper stands on the northwest corner of the 16-acre (6.5 ha) World Trade Center site, on the site of the original 6 World Trade Center. The building is bounded by West Street to the west, Vesey Street to the north, Fulton Street to the south, and Washington Street to the east.

The building's architect was David Childs, whose firm Skidmore, Owings & Merrill (SOM) also designed the Burj Khalifa and the Willis Tower. The construction of below-ground utility relocations, footings, and foundations for the new building began on April 27, 2006. One World Trade Center became the tallest structure in New York City on April 30, 2012, when it surpassed the height of the Empire State Building. The tower's steel structure was topped out on August 30, 2012. On May 10, 2013, the final component of the skyscraper's spire was installed, making the building, including its spire, reach a total height of 1,776 feet (541 m). Its height in feet is a deliberate reference to the year when the United States Declaration of Independence was signed. The building opened on November 3, 2014.

On March 30, 2009, the Port Authority of New York and New Jersey (PANYNJ) confirmed that the building would be officially known by its legal name of "One World Trade Center", rather than its colloquial name of "Freedom Tower". The building is 104 standard floors high, but the tower has only 94 actual stories.

The new World Trade Center complex will eventually include five high-rise office buildings built along Greenwich Street, as well as the National September 11 Memorial & Museum, located just south of One World Trade Center where the original Twin Towers stood. The construction of the new building is part of an effort to memorialize and rebuild following the destruction of the original World Trade Center complex.

7.CTF Finance Centre   

CTF Finance Centre formerly The CTF Guangzhou, Chow Tai Fook Centre  is a supertall skyscraper under construction in Guangzhou, China. It will be the second of the two Guangzhou Twin Towers skyscrapers overlooking the Pearl River in Guangzhou. Its final height will be 530 metres (1,740 feet) with 111 floors. It is expected to be completed in 2016. The building will be used as a conference centre, hotel, observatory, mall and office building. Rosewood Hotels & Resorts will run the tower's hotel component, which consists of 251 guest rooms and 355 residences occupying the top 16 floors and podium of the tower.

8.Taipei 101 Mall 

Taipei 101 – stylized as TAIPEI 101 and formerly known as the Taipei World Financial Center – is a landmark supertall skyscraper in Xinyi District, Taipei, Taiwan. The building was officially classified as the world's tallest in 2004, and remained such until the completion of Burj Khalifa in Dubai in 2009. In 2011, the building was awarded the LEED platinum certification, the highest award according to the Leadership in Energy and Environmental Design (LEED) rating system, and became the tallest and largest green building in the world.

Taipei 101 was designed by C.Y. Lee and Partners and was constructed by Samsung C&T and KTRT Joint Venture .Construction on the 101-story tower started in 1999 and finished in 2004. The tower has served as an icon of modern Taiwan ever since its opening. The building was architecturally created as a symbol of the evolution of technology and Asian tradition. Its postmodernist approach to style incorporates traditional design elements and gives them modern treatments. The tower is designed to withstand typhoons and earthquakes. A multi-level shopping mall adjoining the tower houses hundreds of stores, restaurants and clubs. Fireworks launched from Taipei 101 feature prominently in international New Year's Eve broadcasts and the structure appears frequently in travel literature and international media.

Taipei 101 is primarily owned by pan-government share holders. The name originally planned for the building, Taipei World Financial Center, until 2003, was derived from the name of the owner. The original name in Chinese was literally Taipei International Financial Center .

9.Shanghai World Financial Center

The Shanghai World Financial Center (SWFC) is a supertall skyscraper located in the Pudong district of Shanghai, China. It was designed by Kohn Pedersen Fox and developed by the Mori Building Company, with Leslie E. Robertson Associates as its structural engineer and China State Construction Engineering Corp and Shanghai Construction (Group) General Co. as its main contractor. It is a mixed-use skyscraper, consisting of offices, hotels, conference rooms, observation decks, and ground-floor shopping malls. Park Hyatt Shanghai is the tower's hotel component, comprising 174 rooms and suites occupying the 79th to the 93rd floors, and constituting the second-highest hotel in the world after the Ritz-Carlton, Hong Kong, which occupies floors 102 to 118 of the International Commerce Centre.

On 14 September 2007, the skyscraper was topped out and is 492 meters (1,614.2 ft), making it the 8th tallest building in the world and the fourth tallest structure in Mainland China. The SWFC opened to the public on 28 August 2008, with its observation deck opening on 30 August. The observation deck offers views from 474 m (1,555 ft) above ground level.

The SWFC has been lauded for its design, and in 2008 it was named by architects as the year's best completed skyscraper. In 2013, the SWFC was exceeded in height by the adjacent Shanghai Tower, which is China's tallest structure as of 2015. Together, the Shanghai World Financial Center, Shanghai Tower and Jin Mao Tower form the world's first adjacent grouping of three supertall skyscrapers.

10.International Commerce Centre

The International Commerce Centre is a 108-storey , 484 m (1,588 ft) commercial skyscraper completed in 2010 in West Kowloon, Hong Kong. It is a part of the Union Square project on top of Kowloon Station. It is the world's tenth tallest building by height, world's fourth tallest building by number of floors, as well as the tallest building in Hong Kong.The ICC faces the second-tallest skyscraper in Hong Kong, the 2 International Finance Centre (IFC) directly across Victoria Harbour in Central, Hong Kong Island. IFC was also developed by Sun Hung Kai Properties, along with another major Hong Kong developer, Henderson Land Notable amenities include The Ritz-Carlton, Hong Kong hotel and an observatory called Sky100.