Burj Khalifa with Smith's attempts to make the crown more slender. The building opened on 4 January 2010. The tower was designed by Skidmore, Owings and Merrill (SOM), which also designed the Willis Tower (formerly the Sears Tower) in Chicago and the One World Trade Center in New York City. Burj Khalifa uses the bundled tube design of the Willis Tower, invented by Fazlur Rahman Khan. Due to its tubular system, proportionally only half the amount of steel was used in the construction, compared to the Empire State Building. Khan's contributions to the design of tall buildings have had a profound impact
Tower Life Building Tower Life Building The Tower Life Building is a landmark and historic building in Downtown San Antonio, Texas, USA. Construction of the tower began in 1927 and the building rises 403 feet (123 meters) and has 30 floors. The building, which opened in 1929, was originally named the Smith-Young Tower and is the central component of a partially completed development called the Bowen Island Skyscrapers. The eight sided, neo-gothic brick and terra-cotta tower (complete with gargoyles) was designed by noted local architectural firm Ayres & Ayres (Atlee & Robert M. Ayres). The building also housed San Antonio's first Sears, Roebuck