Question

name the biggest tower in world

Answer 1

but khalifa is your answer

Answer 2

$burj \: khalifa$

The world's tallest artificial structure is the 829.8-metre-tall (2,722 ft) Burj Khalifa in Dubai (of the United Arab Emirates). The building gained the official title of "Tallest Building in the World" and the tallest self-supported structure at its opening on January 9, 2010.