The Petronas Twin Towers of Kuala Lampur, Malaysia is generally accepted as the world's tallest building.
Since the Sears tower also has the highest occupied floor height and the highest roof, many people believe this must be the highest building in the world.
Twin Towers: The Life of New York Citys World Trade Center.
Built of steel-reinforced concrete columns clad in stainless steel and glass, with a design based on geometric patterns originating in ancient Islam, the 88-story buildings are connected at levels 41 and 42 by a double-decker pedestrian skybridge, and each tower is surmounted by a 242-ft-high (74-m) pinnacle.
The towering skyscrapers of the central district, Hong Kong.
Sears Tower in Chicago, Illinois, USA photographed from Lake Michigan.
The twin towers, with 110 floors rising 1353 feet, (are) the tallest in the world.