History of the world's tallest buildings <nowiki>*</nowiki> – Also set record at time of completion as tallest building ever built. The height of Lincoln Cathedral is disputed by some, but accepted by most sources. The completion date for the spire is given as 1311 rather than 1300 by some sources. Also the height of the spire of Old St Paul's Cathedral, destroyed by lightning in 1561, is disputed, for example Christopher Wren (1632–1723) judged that an overestimate and gave a height of . The spire of Mole Antonelliana in Turin, completed in 1889, is claimed to have been tall; however, the upper part of the structure
History of the world's tallest buildings percent, but in the future it is expected to be as low as 46 percent. By 2010, less than half of the 100 tallest buildings in the world were office towers with the majority utilized as residential and mixed use. Presently, only four out of the ten tallest buildings in the world, and twenty eight out of the fifty tallest in the world, are used primarily as offices. A mixed-use tall building contains two or more functions (uses), where each of the functions occupies a significant proportion of the tower's total space. Support areas such as car parks and mechanical