List of tallest buildings and structures
The tallest artificial structure is Burj Khalifa, a skyscraper in Dubai that reached in height on January 17, 2009. By April 7, 2008 it had been built higher than the KVLY-TV mast in North Dakota, USA. That September it officially surpassed Poland's Warsaw radio mast, which stood from 1974 to 1991, to become the tallest structure ever built. Guyed lattice towers such as these masts had held the world height record since 1954.
The Towering Inferno
Architect Doug Roberts returns to San Francisco for the dedication of the Glass Tower, which he designed for contractor James Duncan. The Tower, 1,688 feet tall and 138 stories, is the world's tallest building. During pre-dedication testing, an electrical short starts an undetected fire on the 81st floor. Roberts suspects that Roger Simmons, the electrical subcontractor and also Duncan's son-in-law, cut corners. Roberts confronts Simmons, who reveals nothing.