World's top ten tallest buildings in 2020

1. Kingdom Tower - Jeddah, Saudi Arabia. Height (meter/foot): 1000+/3280+. Year of completion: 2020. Architect: Smith and Gill. Construction Status: Confirmed
2. Burj Mubarak Al Kabir - Kuwait City, Kuwait. Height (meter/foot): 1001/3284. Year of completion: 2016. Architect: Eric Kuhne and Associates. Construction Status: Under construction. The building will include seven vertically-stacked 30-story 'neighborhoods", including apartments, offices, and hotels. Reaching the one kilometer milestone has long been an elusive dream, but now seems it will finally be realised.
3. Burj Khalifa - Dubai, United Arab Emirates. Height (meter/foot): 828/2717. Year of completion: 2010. Architect: Adrian Smith (Skidmore, Owens and Merill). Construction Status: Completed. The Burj Khalifa opened one January 4th of this year, and is currently the tallest man made structure ever built, which includes TV-towers
4. Shanghai Tower - Shanghai, PR China. Height (meter/foot): 632/2073. Year of completion: 2014. Architect: Gensler / Tongji University. Construction Status: Under construction. Only four years after the Shanghai World Financial Center opened its doors to become the the third tallest building in the world, the city is once again breaking its own records with the Shanghai Tower, which upon completion will be the second tallest in the world
5. Mecca Royal Clock Tower - Mecca, Saudi Arabia. Height (meter/foot): 601/1972. Year of  completion: 2011. Architect: Dar Al-Handasah Architects. Construction Status: Under construction.
   It will surpass the Emirates Park Tower in Dubai as the world's tallest hotel. It is also the second tallest building under construction.
6. Incheon Tower - Incheon, South Korea, Height (meter/foot): 601/1969. Year of completion: 2015. Architect: John Portman and Associates. Construction Status: Under construction. The Incheon Tower will consist of two buildings with 150 floors each, making them the world's tallest twin towers.
7. Goldin Finance 117 - Tianjin, PR China. Height (meter/foot): 597/1959. Year of completion:2014-15.
   Architect: P&T Group. Construction Status: Under construction/on hold. Although construction started in 2008, in late January 2010 it was announced that it had been suspended. If construction resumes, the building will not be completed until late 2014 or early 2015.
8. Lotte Super Tower - Seoul, South Korea. Height (meter/foot): 555/1821. Year of completion: 2014. Architect: Kohn Pedersen Fox. Construction Status: Under construction. At 555 m (1,821 ft) in height, the building would become one of the world's tallest buildings if completed on schedule in 2014. 
9. One World Trade Center - New York City, United States Height (meter/foot): 541/1776, Year of completion: 2013. Architecht: David Childs (Skidmore, Owings and Merril). Construction status: Under construction. One World Trade Center will be the tallest building in the United States. The construction is part of an effort to memorialize and rebuild after the original World Trade Center complex was destroyed during the terrorist attacks of September 11, 2001.
10. PVN 102 tower Location Tu Liem, Hanoi, Vietnam Status Approved Groundbreaking 2011 Estimated completion 2014 Use Office and Apartments Height Roof 528 metres (1,732 ft) Top floor 528 metres (1,732 ft) Technical details Floor count 102 Elevators Cooming Soon Cost US$1.2 billion Companies involved Developer PetroVietnam Construction Joint Stock Corporation Owner PetroVietnam . PVN 102 Tower will be the tallest building in Southeast Asia.

Database 100 tallest completed buildings in the world [click here] and [click here]