*Does it really deserve that money and time to have the longest tower all over the world ??
$$ Glance about Burj Khalifa :
Burj Al Khalifa of the most important monuments in the city of Dubai and the tallest building built by man, the highest tower in the world with an elevation of 828 meters. Construction started on 21 / September 2004 and completion of the restructuring of State in the first of October 2009 and was inaugurated on 4 January 2010 to become the world's highest building.
