Tallest building in the world?
954996
The tallest free standing structure is the CN Tower in Toronto Ontario Canada 1815feet 5 inches. It has restaurents and many other facilities in side so it is not just a hollow tower\nThe tallest office/residential building is Taipei 101 in Taiwan it is1667 feet tall
435889
The Taipei 101,in Taipei, Taiwan is now the tallest building.  It beats out the Petronas Towers by about 190ft.
266084
Petronas tower is in Malaysia. Its actually twin towers, which has 88 storeys, stands 452 meters above street level. It has a sky bridge which connects the 2 towers, thelength of the sky-bridge being 58.4 meters, at a height of 170 meters above street level. For more information go to the link: http://www.klcc.com.my/Showcase/PTT/ps_ptt_overview.htm
755204
This is really a question that Architects and Structural Engineers have been trying to resolve. The problem is that the more that you go up, the more pressure you place on the earth, as well as the increase of size of columns that are required at the lower levels. \n\nThe ultimate theory of a skyscraper (though not really a building) is a space elevator, or a conveyance system from the earth to a space station in geosyncerous (sp) orbit.\n\nOne thing is for certain: as new materials are being created & discovered (carbon nano-tubes), skyscrapers will get higher and higher.
232230
The CN Tower in Toronto, Canada standing 1,815 ft., 5 inches tall.  It's the tallest free-standing building in the world.
500212
Blackpool Tower is 518feet 9 inches tall!\nIt weighs 2586tons (little extra fact there)!
836581
(m)\n\nRobert Wadlow — The world's tallest man.
911163
Is this a trick question? Mt. Everest was the tallest, whether people measured it or not.\n\nOr do you mean, which one did we THINK was the tallest before Everest took that title? Better ask what you mean!
313309
Pentagon in USA is presently the highest building.Before the attack in USA World Trade Center(also known as Twin Tower)was the highest building.It is presently destroyed by Osama Bin Laden.
1034107
The HIGHEST is Mount Everest at 8,848 metres.\n\nPu'u Wekiu (in Hawaii, USA) is the tallest as it starts from the ocean.\nit is 4208 metres high
1077529
The Sears Tower. The tower has 108 stories, for a grand total of 1,450 feet. It is 1,700 feet tall if you want to count the antennas on the roof.
849810
Here's the start of the answer and here is the link to the rest.\nA skyscraper is a very tall, continuously habitable building. Although there is no official definition, a minimum height of approximately 150 meters or 492.12 feet is often used as a criterion for a building to qualify as a skyscraper. Other criteria like shape and appearance may also affect whether or not a building is considered a skyscraper. The city of Chicago is credited as being the birth place of the skyscraper.\n\n\nhttp://en.wikipedia.org/wiki/Skyscraper
191761
The CN Tower is the tallest free-standing structure on land in the world, at 553.33 metres (1,815 ft., 5 inches).
741891
go there----> http://www.usatoday.com/news/world/2004-04-17-tallest-man_x.htm
348193
It was built during a time of great turmoil and when the U.S.A was experiencing high unemployment rates.  Despite the problems of America it was built and for a time it was the tallest building in the world.  It was a great achievement in the face of trouble!
763886
The Al Faisaliah Tower\n\nor\n\nKingdom Tower (Aka Kingdom Center)
460645
Taipei 101 in Taipei, Taiwan at 508 Meters.\nhttp://skyscraperpage.com/diagrams/?1241105\n\n[modified below for more sources and some details on how there are different categories for 'tallest building']\nThe Council on Tall Buildings and Urban Habitat (CTBUH)  defined four categories in which the "world's tallest building" can be measured:\n\n1) Height to the structural or architectural top, Taipei 101\n2) Height to the highest occupied floor, Taipei 101\n3) Height to the top of the roof, Taipei 101\n4) Height to the top of antenna, Sears Tower\n\nToday, the Taipei 101 leads in the first category with 508 m (1,667 ft); in the second category with an occupied floor at 438 m (1,437 ft); and in the third category with 448 m (1,470 ft). The first category was formerly held by the Petronas Twin Towers with 452 m (1,483 ft), and before that by Sears Tower with 443 m (1,448 ft). The second category was held by the Sears Tower, with 435 m (1,431 ft). The third category was formerly held by the Sears Tower with 442 m (1,445 ft).\n\nThe Sears Tower still leads in the fourth category with 527 m (1,730 ft), previously held by the World Trade Center until the extension of the Chicago tower's western broadcast antenna in 2000, over a year prior to the Trade Center's destruction in 2001.\nhttp://en.wikipedia.org/wiki/World's_tallest_structures\n\nThe CN tower in Canada is 'officially' considered the "tallest Freestanding structure on land" .. not the "tallest building (fully habitable)", although some sites will give it this designation in some limited categories.\n\nThe second body that ranks tall structures is "All About Skyscrapers" which divided the comparison of structures into the following categories.\n\nFully habitable-Spire, Taipei 101 Taipei (509m) \nFully habitable-Antenna, Sears Tower Chicago (529m) \nFully habitable-Highest Floor, Taipei 101 Taipei (438m) \n\nPartially habitable-Spire, CN Tower Toronto (452m) \nPartially habitable-Antenna, CN Tower Toronto (554m) \nPartially habitable-Highest Floor, CN Tower Toronto (452m)