Question

Which is the world's tallest free- standing structure?
A. Burj Khalifa
B. Eiffel Tower
C. Qutub Minar
D. C.N Tower (Toronto)

Answer 1

Hint:
It is located in the United Arab Emirates and is known as the tallest building in the world since the year 2009. Its design is derived from the Islamic architecture of the region, such as in the Great Mosque of Samarra.

Complete solution:
The Burj Khalifa, literally ("Khalifa Tower" in English), is known as the Burj Dubai prior to its inauguration in 2010, is a skyscraper in Dubai, United Arab Emirates.

Since its completion in 2009, the Burj Khalifa has become synonymous with towering height. At over 828 metres (2,716.5 feet) and more than 160 stories,
(this point is reinforced by the fact that the Burj took the titles of world’s tallest building and structure in 2008 before it was even completed). Burj Khalifa holds the tag of the "Tallest building in the world as well as Tallest free-standing structure in the world".

Burj Khalifa has the greatest number of stories in the globe and is also the highest occupied floor in the world. Not only this but it also possesses the "Highest outdoor observation deck in the world."

Construction of the Burj Khalifa was started in the year 2004, with the exterior completed five years later in 2009. The main structure is reinforced concrete. The building was opened in the year 2010 as part of a new development known as Downtown Dubai. It is designed to be the centrepiece of large-scale, mixed-use development.

Hence, the correct answer is option A.

Note:
The decision for the construction of the building is based on the decision of the government in order to diversify from an oil-based economy, and for Dubai to gain international recognition. The building was originally named Burj Dubai but was renamed in honour of the ruler of Abu Dhabi and president of the United Arab Emirates,Khalifa bin Zayed Al Nahyan.