World Record of ‘tallest building in the world’ has been achieved by Burj Khalifa from Dubai, UAE.

Burj Khalifa: World’s Tallest Building has height of 828 m (2,716 ft 6 in) stands in Dubai, UAE. The building was formally known as Burj Dubai but later on it was renamed as Burj Khalifa (Khalifa Tower). The building was developed by Emaar Properties and the building construction began on September 21, 2004 with the exterior of the structure completed on October 01, 2009. The building officially opened on January 04, 2010. The building was made in the honor of the ruler of Abu Dhabi, Sheikh Khalifa bin Zayad al –nahyan. The cost of project was $1.5 Billion.