Hello,

The Aerium  near Berlin  is the largest that is according to uninterrupted volume  while  Boeing's  factory in Everett , Washington, United States is the largest by  volume.

The Aerium's volume is 5.2 million m^3 .

Boeing's factory volume is 13.3 million m ^3.

Hope you got your answer.

Hello
Tushar Yadav , The United Arab Emirates has the world's tallest building, Burj Khalifa (828 meters), in Dubai. The Hotel is having 163 floors in it. And if we talk about this hotel or building cost then it is about 1.5 billion US$.

Hope it will be helpful for you :)