what is the tallest building in the world?

Answer 1

It is the Taipei 101. It is in Taipei City, Taiwan.

Answer 2

Up until 1998 the tallest building status was essentially uncontested. Counting buildings as structures with floors throughout, and with antennas excluded, the Sears Tower in Chicago was considered the tallest. When the Petronas Twin Towers in Kuala Lumpur, Malaysia were built, controversy arose since the "spire" extended nine meters higher than the roof of the Sears Tower. Excluding the spire, the Petronas Towers are not taller than the Sears Tower. Therefore, before the Petronas Towers were completed, the Council on Tall Buildings and Urban Habitat (CTBUH) defined four categories in which the "world's tallest building" can be measured:

Height to the structural or architectural top (including spires and pinnacles, but not antennas, masts or flagpoles)
Height to the highest occupied floor
Height to the top of the roof
Height to the top of antenna
The height is measured from the sidewalk level of the main entrance. In all of these categories, Sears Tower had held the top spot. After Petronas was built, Sears Tower became second in the first category only. On April 20, 2004, the Taipei 101 in Taipei, Republic of China (Taiwan) was completed. Its completion gave it the record for the first three categories.

Today, Taipei 101 leads in the first category with 509 m (1,671 ft); in the second category with an occupied floor at 439 m (1,441 ft); and in the third category with 449 m (1,474 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 442 m (1,451 ft). The second and third categories were held by the Sears Tower, with 412 m and 442 m (1,451 ft) respectively.

The Sears Tower still leads in the fourth category with 527 m (1,729 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. Its antenna included, 1 World Trade Center measured 526 m (1,727 ft). The World Trade Center became the world's tallest buildings to be demolished–indeed, its site entered the record books twice on September 11, 2001, in that category, replacing the Singer Building, which once stood a block from the WTC site.

The Ostankino Tower and the CN Tower are excluded from these categories because they are not "habitable buildings", which are defined as frame structures made with floors and walls throughout.

for more pl. visit:
http://en.wikipedia.org/wiki/World's_tallest_structures

Answer 3

Currently it is Taipei 101. After 2 or 3 yrs it will be the Burj Dubai.

Answer 4

It is the Taipei 101. It is in Taipei City, Taiwan.

Answer 5

The one above (Taipei 101), for now. I hear there is one being built in Saudi Arabia they are keeping the height a secret!

Answer 6

Warsaw TV Mast, Plock, Poland. meters: 646 feet: 2119. ha! you can check it out by going on to http://hem.passagen.se/alphaz2/towers.htm

Answer 7

Category Structure Country/Region City Height (Meters) Height (Feet)
Supported stucture Warsaw Radio Mast (collapsed in 1991) Poland Gąbin 646.38 m 2,120 ft
KVLY-TV mast USA Blanchard, North Dakota 629 m 2,063 ft
Freestanding structure Petronius Platform Gulf of Mexico 610 m 2,001 ft
Freestanding structure on land CN Tower Canada Toronto 553.33 m 1,815 ft
Building - to top of antenna Ostankino Tower Russia Moscow 540.1m 1,772 ft
Building - to architectural top Taipei 101 Republic of China (Taiwan) Taipei 509 m 1,671 ft
Freestanding structure Troll gas platform North Sea, Norway 472m 1,524 ft
Building - to highest occupied floor Taipei 101 Republic of China (Taiwan) Taipei 439 m 1,441 ft
Chimney Chimney of GRES-2 Power Station Kazakhstan Ekibastusz 419.7 m 1,375 ft
Lattice tower Kiev TV Tower Ukraine Kiev 385 m 1,263 ft
Partially guyed tower Gerbrandy Tower Netherlands Lopik 375 m 1,230 ft
Electricity Pylon Yangtze River Crossing People's Republic of China Jiangyin 346.5 m 1,137 ft
Bridge pillar Millau Viaduct France Millau 341 m 1,119 ft
Uncompleted building Ryugyong Hotel North Korea Pyongyang 330 m 1,083 ft
Dam Nurek Dam Tajikistan Nurek 300 m 984 ft
Communication tower N Seoul Tower South Korea Seoul 239.7m 786 ft
Minaret Hassan II Mosque Morocco Casablanca 210 m 689 ft
Monument Gateway Arch USA St. Louis, Missouri 192 m 630 ft
Masonry tower San Jacinto Monument USA La Porte, Texas 174 m 570 ft
Inclined structure Tower of Montreal Canada Montreal, Quebec 169.5 m 556 ft
Church tower Ulm Münster Germany Ulm 161 m 528 ft
Pre-Industrial Era building Lincoln Cathedral 1311 (Collapsed in 1549) England Lincoln 159.7 m 524 ft
Industrial hall Vehicle Assembly Building USA Kennedy Space Center 160 m 525 ft
Memorial cross Santa Cruz del Valle de los Caídos Spain El Escorial 152.4 m 500 ft
Tomb Great Pyramid of Giza Egypt Giza, near Cairo 138.75 m (455.21 ft)
originally 146.5 m 481 ft
Air traffic control tower Vancouver Harbour Control Tower Canada Vancouver 142 m 466 ft
Roller coaster Kingda Ka USA Jackson, New Jersey 138.98 m 456 ft
Roller Coaster Top Thrill Dragster USA Sandusky, Ohio 128 m 420 ft
Flagpole (free-standing) Raghadan Flagpole Jordan Amman 126.8 m 416 ft
Storage silo Henninger Turm Germany Frankfurt 120 m 394 ft
Sculpture Spire of Dublin Republic of Ireland Dublin 120 m 393 ft
Light advertisement Bayer Cross Leverkusen Germany Leverkusen 118 m 387 ft
Wooden tower Radio Tower Gliwice Poland Gliwice 118 m 387 ft
Radio Tower Muehlacker (demolished in 1945) Germany Mühlacker 190 m 623 ft
Support tower of aerial tramway Pillar of third section of Gletscherbahn Kaprun Austria Kaprun 113.6 m 373 ft
[edit]
Tallest building by function
Category Structure Country City Height to architectural top
Office Taipei 101 Republic of China (Taiwan) Taipei 509 m (1,671 ft)
Residential Q1 Australia Gold Coast 323 m (1,058 ft)
Hotel Burj al-Arab United Arab Emirates Dubai 321 m (1,053 ft)
Educational Moscow State University Russia Moscow 240 m (787 ft)
Hospital Tan Tock Seng Hospital Singapore Singapore 159m (519 ft)
Recreational Kingda Ka United States Jackson, NJ 138.98m (456 ft)