The tallest building in the world currently is the "Burj Dubai", located in Dubai, at 2717 feet.
The highest building at present in the world is BURJ DUBAI ...
The 4th tallest building in the world (and 6th tallest structure overall) is the Shanghai World Financial Center in Shanghai, China. Completed in 2008, it holds the world record for tallest roof height of 492 m (1614 ft.) and highest observation deck, 474 m (1555 ft. )
Warsaw Palace of Culture and Science building On New Year's Eve 2004 four 6.3-metre clock faces were added to the top of the Warsaw Palace of Culture and Science building in Warsaw, Poland making it the highest 4-faced clock tower in the world and the second highest clock tower in the world.[1]. The NTT DoCoMo Yoyogi Building 240 meters (787 feet) is 10 meters higher and is the highest clock tower in the world. The Allen-Bradley Clock Tower holds the record for the largest non-chiming four faced clock. http://en.wikipedia.org/wiki/Clock_tower
persepolis
the Lego building in Downtown Houston, Texas is the shortest building ever!
The highest building at present in the world is BURJ DUBAI ...
Burj Dubai(Dubai) is the tallest building in the world.
burj khalifa
Burj Khalifa
CHINA
Burj Khalifa - Dubai
Burj Khalifa
The highest building in the world is the Burj Khalifa in Dubai. Located in the United Arab Emirates, it stands over 2,700 feet above the ground.
The question could be about the highest mountain? Which is Mount Everest. The current highest building is Burj Khalifa.
In 2002, the world's highest building was Petronas Towers due to its spires on the top. But if you consider an antenna as a part of the building then it was Willis Tower (formerly Sears Tower). But the antenna is not a part of the building, that's why Petronas Towers was the highest building back then. FYI, Willis Tower has 110 living floors and Petronas Towers has 88 living floors.
Top of the Buj Dubai building, which is at the moment the tallest building in the world
China World Trade Center Tower III