Thirteen years were spent to build this enormous building.
In 2000, however, a new antenna mast was placed on the Willis Tower, giving it the record in the fourth category.
The shape of Guangzhou is mixed usage.
On-hold buildings whose construction was interrupted after it had reached a significantly advanced state are also listed.
It has 123 floors of which six are underground.
Name: Millenium Challenge Tower Height: 1,852m Year of First Proposal: 2005 Date of Completion: Undetermined Country of Origin: Kuwait City, Kuwait Also referred to as the 'Al Jaber Tower' due to its proposed constuction in Kuwait City.