Willis Tower of the four categories in 2004 to become recognized as the tallest building in the world. Taipei 101 surpassed the Petronas Twin Towers in spire height and the Sears Tower in roof height and highest occupied floor. The Sears Tower retained one record: its antenna exceeded Taipei 101's spire in height. In 2008, the Shanghai World Financial Center claimed the records of tallest building by roof and highest occupied floor. On August 12, 2007, the Burj Khalifa in Dubai, United Arab Emirates was reported by its developers to have surpassed the Sears Tower in all height categories. Upon completion, One
Tower Building, Liverpool Tower Building, Liverpool Tower Buildings is a former office block in the city of Liverpool, Merseyside, England. It stands with its longer front on the east side of the Strand, and extends round the corner into Water Street. The building is located directly opposite the Royal Liver Building, which was designed by the same architect. Earlier buildings on the site have been a sandstone mansion, and a later fortified house known as the Tower of Liverpool. After this was demolished in 1819, it was replaced in 1846 by the first structure to be named Tower Buildings. The present structure is